Forum Astronomskog Magazina

Astronomske diskusije => Posmatranja => Topic started by: Astro_fun_times on July 30, 2023, 08:52:41 pm

Title: Star party - Letenka 2023
Post by: Astro_fun_times on July 30, 2023, 08:52:41 pm
Pozdrav drugari (i drugarice).
Kad sam poceo da se bavim ovim hobijem u drugoj temi sam pokrenuo pitanje okupljanja pod vedrim nebom, astro druzenja i star partija.
Na moju srecu Goran se javio i zajedno smo otisli taj put.
Od tad sam upoznao jos par dobrih ljudi sa kojima se s vremena na vreme nadjem na Letenki i druzimo se pod zvezdama.

Mislim da ima jos takvih ljudi koji bi zeleli da se s vremena na vreme okupe pod mracnijim nebom i uzivaju u hobiju u drustvu i sjajnoj atmosferi.

I astrofotografi i vizuelci su dobrodosli.

Uglavnom je to mesto okupljanja na Letenki tako da znam da nije svima blizu ni pristupacno ali kome jeste i zeli da nam se pridruzi, slobodno neka se javi.

Tako da eto, neka ova tema bude tu za "oglasavanje" narednih star partija pa ko bude voljan da nam se pridruzi uvek je dobrodosao.
Lep provod, pivce i posna plazna su zagarantovani hehe.

Nemojte se stideti, necete zazaliti. Nesto novo mozete da naucite i lepo cete se provesti, to vam garantujem.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 08, 2023, 09:28:48 pm
Caos ljudi.
U subotu, 12.08. bi vreme trebalo da bude lepo.
Takodje u toj noci ce biti vrhunac metorske kiše.
Par ljudi planira da bude gore u subotu uveče.
Ako je jos neko zainteresovan da nam se pridruzi slobodno neka se javi da se druzimo i uzivamo u nocnom nebu.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 10:43:21 am
Niko zainteresovan?
Pih
Sve astronomi samotnjaci hehe
Title: Re: Star party - Letenka 2023
Post by: Katerina on August 10, 2023, 11:24:56 am
Hello!
I'm from Belarus but now live in Novi Sad and am interested in astrophoto (Canon 6D, 24/2.8).
We are looking for where we can observe the Perseids on the 12th.
Letenka seems a suitable variant.
We will be happy to meet.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 11:36:24 am
That is amazing.
You (and anyone you bring with) are most welcome to join us.

Do you know where Letenka is located?
Title: Re: Star party - Letenka 2023
Post by: ε Aurigae on August 10, 2023, 11:43:09 am
See you tomorrow!
Title: Re: Star party - Letenka 2023
Post by: Katerina on August 10, 2023, 11:51:22 am
Thank you very much!)
Yes, I have Letenka's coordinates.
Could you tell me, please, at what time are you going to be there?
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 11:55:25 am
Quote from: eaurigae on August 10, 2023, 11:43:09 amSee you tomorrow!
No, not tomorrow, the day after, on Saturday 12th
Tomorrow is Friday hehe

We are still not sure when we will meet, but we should be there by 8PM
We might come even earlier.

I will post here (because cell phone reception up therr is poor) on Saturday when we plan meet(if its any earlier) but count on 8PM


Title: Re: Star party - Letenka 2023
Post by: ε Aurigae on August 10, 2023, 12:02:59 pm
My mistake....thought it's Friday today :)

Yes see you on Saturday
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 12:15:44 pm
I hope more people will decide to join us.

Nadam se da ce se jos neko odvaziti da nam se pridruzi.
Title: Re: Star party - Letenka 2023
Post by: ε Aurigae on August 10, 2023, 12:22:11 pm
We will meet on Saturday let's say between 19 and 20h (still to be confirmed) at Letenka.

Once friends from Belarus arrive, we will take them to the field next to it (200m) because of better observing position and darkness.

Reason: recently security guy who lives in small house next to letenka field, started using insanely strong led street light.

Just in case, exact coordinates of the spot where session will be conducted:

Dropped pin
https://maps.app.goo.gl/EqSfRynSsn5kvPge6
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 10, 2023, 12:23:15 pm
Razmišljam o tome, al ne mogu da obećam.
Title: Re: Star party - Letenka 2023
Post by: ε Aurigae on August 10, 2023, 12:25:06 pm
Bilo bi super ako bi uspeo
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 12:28:08 pm
Quote from: vlaiv on August 10, 2023, 12:23:15 pmRazmišljam o tome, al ne mogu da obećam.
Razmisljaj jace onda i dodji🤣
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 12:51:37 pm
@Katerina, i hope you have some camping chair, standing all night long can be tiredsome
Stargazing while sitting is much more enjoyable hehe
We wouldnt want to see you stand while the rest of us are sitting like a certain female friend on our last star party thanks to her thoughtful boyfriend whom we wont name here by name 😁 hehe
Title: Re: Star party - Letenka 2023
Post by: nemars on August 10, 2023, 12:57:16 pm
Quote from: Magelan118 on August 10, 2023, 10:43:21 amNiko zainteresovan?
Pih
Sve astronomi samotnjaci hehe

Ima nas jos par zainteresovanih al ne komentarisemo jer nismo sigurni jos uvek da cemo doci.
Title: Re: Star party - Letenka 2023
Post by: goran.nikacevic on August 10, 2023, 12:59:42 pm
Potrudicu se da stignem i ja, vidimo se gore.

Ja ne snimam, samo vizuelno, tako da ako hoce da se pridruzi i neko ko mozda i nema teleskop, ja cu rado svoj podeliti, sto nas je vise to bolje.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 01:44:15 pm
Quote from: nemars on August 10, 2023, 12:57:16 pmIma nas jos par zainteresovanih al ne komentarisemo jer nismo sigurni jos uvek da cemo doci.

Sjajno, slobodno izrazite svoje interesovanje cak i ako niste sigurni da cete doci, to ce mozda podstaci nekoga drugog ko se takodje lomi da li da dodje da prelomi i dodje

Bravo Gorane.
I ja imam dobsona samo malo manjeg od tvog, i takodje pozivam i one koji su zaingeresovani za astonomiju a nemaju svoj teleskop da dodju da se druze.
Moci ce da gledaju i kroz moj.

Ko se premišlja da li da dodje ili ne, a slobodan je kajace se ako ne bude dosao.

Nemojte da budete neko ko se kaje, dodjite slobodno.
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 10, 2023, 01:50:27 pm
Znači ako budem dolazio, bolje da nosim mali apo nego dobsona?

Biće većih teleskopa?
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 02:00:47 pm
*kad budes dolazio, ponesi sta god zelis.
Ja nosim jedan za slikanje i dobsona.
Stavim sekvencu da slika pa se igramo sa dobsonom i posmatramo, pricamo, druzimo se.

Ovo je spontano neformalno druzenje tako da nema pravila hahaha

A da ima, sto manje belog svetla, N.I.N.A u dark mod molicu ahhaha
Znate na koga mislim, pronaci cete se
Title: Re: Star party - Letenka 2023
Post by: Katerina on August 10, 2023, 04:48:06 pm
Quote from: Magelan118 on August 10, 2023, 12:51:37 pm@Katerina, i hope you have some camping chair, standing all night long can be tiredsome
Stargazing while sitting is much more enjoyable hehe
We wouldnt want to see you stand while the rest of us are sitting like a certain female friend on our last star party thanks to her thoughtful boyfriend whom we wont name here by name 😁 hehe

Thank you for the idea!)
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 06:42:41 pm
No problem. If you have any qestions feel free to ask.
Btw, its quite useful to have "Autan" with you, or someone will lend you theirs because beside our little star party up there, another party is scheduled at the same time - mosquito feasting party and they are hoping that we will be their main course 🤣
Title: Re: Star party - Letenka 2023
Post by: CyberianIce on August 10, 2023, 07:44:50 pm
Quote from: Magelan118 link=msg=80151A da ima, sto manje belog svetla, N.I.N.A u dark mod molicu ahhaha
Znate na koga mislim, pronaci cete se

Ako neko ima flet panel od 200mm i veći neka ponese pošto je naš standardni suplajer na odmoru...
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 10, 2023, 07:56:49 pm
Ako nema nikog, imam ja 200mm flet panel, samo mislim da neću ostati do kraja, pa ću vam ga ostaviti a dogovorićemo se za vraćanje.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 07:58:12 pm
Imam ja plafonjeru, nije dovoljno velika da se stavi na 200mm, ali je i previse svetla tako da se mora koristiti izdaleka.
Stavicemo belu majicu pa uperiti u nju.
Ako ne bude radilo, docekacemo zoru pa u nebo uperiti hehe

A imate i laptop ekrane...
Moze i to?

Jesi ti taj APO mislio za vizuelu ili za slika je vlaive?
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 10, 2023, 08:11:47 pm
Pa mislio sam za wide field vizuelno.

Slabo nešto slikam a i posmatram u poslednje vreme, pa će mi ovo dobro doći da se malo "trgnem". Mislio sam da "lagano" krenem - tipa AZ4 i 80mm frac za široko polje pošto će biti dobova sa aperturom za ozbiljnije stvari, pa da ne nosim moj.

Kraj će leta, sad je Andromeda dobro pozicionirana, a taj 80mm apo je dovoljno kratak da obezbedi skoro 4 stepena sa odovarajućim okularom. Možda možemo i North American da probamo, mada nemam 2" UHC filter (ti široki okulari su mi svi 2").

Imam i 18mm 82 stepena ES koji do sad nikad nisam probao. Dobio sam ga na poklon od Gerry-ja (JetStream na SGL-u) još svojevremeno, ali ga do sad nisam isprobao, pa ću ga poneti da probamo.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 10, 2023, 08:23:38 pm
Odlicno.
Ja sam kupio neki chinese trash binoviewer ali na dobsonu bez pomeranja primara nisam uspeo da dobijem fokus.
Zapravo moze da se dobije ali samo uz korišcenje njegovog barlow-a od x1.85 ako se ne varam, sto je sa 6mm okularima, na dobu, preveliko uvecanje.
Ako se setim da i njega ponesem, mozemo probati na apo jer su binovieweri cini mi se i pravljeni za refraktor dizajn teleskopa
Title: Re: Star party - Letenka 2023
Post by: CyberianIce on August 10, 2023, 10:07:49 pm
Ne može moj leptop jer je oled ekran i ima neku šugavu frekvenciju osvežavanja pa se vide dijagonalne linije na fletovima
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 11, 2023, 05:06:11 am
A sa belim majicom preko?
Verujem da bi bilo ok
Title: Re: Star party - Letenka 2023
Post by: CyberianIce on August 11, 2023, 11:54:52 am
Jok, ne moze. Amoled nema konstantno pozadinsko osvetljenje nego svaki piksel treperi 60 puta u sekundi a ekspozicije su mnogo krace pa nekad uhvati u potpuno mraku, nekad na pola itd. To bi moglo ako bi neko imao stariji leptop koji ima TFT ekran i pritom da je 17" da bi prekrio ceo teleskop.
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 11, 2023, 12:07:49 pm
Vidim ja da ćemo morati da pokrenemo jedan topic u DIY sekciji - kako od jefine kineske LED plafornjere napraviti flet panel.
Title: Re: Star party - Letenka 2023
Post by: nemars on August 11, 2023, 01:16:21 pm
Quote from: Magelan118 on August 10, 2023, 01:44:15 pm
Quote from: nemars on August 10, 2023, 12:57:16 pmIma nas jos par zainteresovanih al ne komentarisemo jer nismo sigurni jos uvek da cemo doci.

Sjajno, slobodno izrazite svoje interesovanje cak i ako niste sigurni da cete doci, to ce mozda podstaci nekoga drugog ko se takodje lomi da li da dodje da prelomi i dodje

Evo potvrdjujem :)

Dolazim ja sa 5" f/7 njutnom i devojka sa DSLR da proba prvi put da fotka bez trekinga. Pretpostavljam Andromedu, al ako imate bolje ideje za metu (Canon 600D, 50mm f/1.8 ), zanima nas da cujemo savet. Drugar sa 8" f/5 njutnom se isto najavio, i trebalo bi da povede neku ekipu ako dodje.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 11, 2023, 01:37:35 pm
To su sjajne vesti nemars, bas si me obradovao.
Bice ovo sjajno druzenje i uzivanje u nebu.
Za metu, to ce drugi strucnjaci koji imaju iskustva sa objektivima bolje reci

@vlaiv, da, moramo.
Ja sam gledao neke diy projekte da pravim poklopac na servo motor a u njemu flat panel, da olaksam sebi, da ne moram da navijam sat u 3 nocu da ustanem radi poklopca da slikam darkove, pa posle flatove.

Siguran sam da ima jos ljudi koji bi hteli
Valjalo bi da tako neki projekat odradimo
Title: Re: Star party - Letenka 2023
Post by: Aleksej on August 11, 2023, 02:19:55 pm
Pozdrav!

Ja sam iz Rusije, ali trenutno zivim u Novom Sadu.
Zelim da se pridruzim.
Imam ovde samo dvogled 15x70, pokusacu da vidim neke svetle objekte.

Izvinjavam se na greskama, jos uvek lose govorim srpski.
Title: Re: Star party - Letenka 2023
Post by: nemars on August 11, 2023, 02:23:00 pm
Nadam se da imas neki tronozac za njega. Ako ne, jel ima neko od ekipe neki viska? Super ti je srpski, ne brini :) Vidimo se!
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 11, 2023, 02:24:52 pm
Dobrodosao Aleksej, jedva cekamo da te upoznamo.

Bice teleskopa kroz koje ces moci da gledas a ponesi i dvogled, vole ljudi i kroz njega da gledaju.

Gresaka nema, a i da ima, ima nekih koji su odavde pa grese vise nego ti dok kuckaju (a to sam ja 🤣)

Zavalimo se u stolice pa dok vrat dozvoljava gleda se, kad zaboli vrat onda neko drugi malo gleda hahaha
Title: Re: Star party - Letenka 2023
Post by: CyberianIce on August 11, 2023, 02:39:58 pm
Quote from: vlaiv on August 11, 2023, 12:07:49 pmVidim ja da ćemo morati da pokrenemo jedan topic u DIY sekciji - kako od jefine kineske LED plafornjere napraviti flet panel.
To nije problem napraviti koliko je problem osloboditi se obaveza kako bi se obezbedilo vreme za sve DIY projekte.

Quote from: nemars on August 11, 2023, 01:16:21 pmsa DSLR da proba prvi put da fotka bez trekinga. Pretpostavljam Andromedu, al ako imate bolje ideje za metu (Canon 600D, 50mm f/1.8 )

Ja sam pre koju godinu fotkao andromedu sa 50/1.8 i krop canonom ali sam imao barndoor tracker. Moze i bez trackera ali sa jako kratkim subovima (5s) i jako visokim ISO i svako malo da se ponovo centrira kadar.
Title: Re: Star party - Letenka 2023
Post by: Aleksej on August 11, 2023, 03:03:32 pm
Quote from: nemars on August 11, 2023, 02:23:00 pmNadam se da imas neki tronozac za njega. Ako ne, jel ima neko od ekipe neki viska? Super ti je srpski, ne brini :) Vidimo se!

Imam monopod, mislim da to ce biti bolje za dvogled. Jos nemam mnogo iskustva sa nim.

Quote from: Magelan118 on August 11, 2023, 02:24:52 pmDobrodosao Aleksej, jedva cekamo da te upoznamo.

Bice teleskopa kroz koje ces moci da gledas a ponesi i dvogled, vole ljudi i kroz njega da gledaju.

Gresaka nema, a i da ima, ima nekih koji su odavde pa grese vise nego ti dok kuckaju (a to sam ja 🤣)

Zavalimo se u stolice pa dok vrat dozvoljava gleda se, kad zaboli vrat onda neko drugi malo gleda hahaha

 ;D Hvala
Potrazim i stolice da mogu duze da gledam. Inace vrat zaboli za pola sata 🤣

Title: Re: Star party - Letenka 2023
Post by: nemars on August 11, 2023, 03:16:50 pm
Quote from: CyberianIce on August 11, 2023, 02:39:58 pmJa sam pre koju godinu fotkao andromedu sa 50/1.8 i krop canonom ali sam imao barndoor tracker. Moze i bez trackera ali sa jako kratkim subovima (5s) i jako visokim ISO i svako malo da se ponovo centrira kadar.

Mi smo gledali neke alate i zakljucili da je najbolje da koristimo ISO 6400 (https://www.photonstophotos.net/Charts/RN_e.htm) i 2s subs (http://web.archive.org/web/20200220123345/https://www.sahavre.fr/tutoriels/astrophoto/34-regle-npf-temps-de-pose-pour-eviter-le-file-d-etoiles). Jel ima neki dobar razlog da idemo na 5s? Ako sam dobro razumeo 2s je da ne bismo imali razvucene zvezde nego tackaste.
Title: Re: Star party - Letenka 2023
Post by: CyberianIce on August 11, 2023, 03:31:07 pm
Da, rule 500 (https://astrobackyard.com/the-500-rule/)

Podeli se 500 sa fokalnom duzinom objektiva, u ovom slucaju to je 500 / 50mm = 10s ali posto je to ekvivalent za 35mm senzore, a 600D je krop, onda se taj broj dodatno podeli sa 1.6 (krop faktorom) i dobija se 6.25s. To je maksimalna ekspozicija do koje ce zvezde biti koliko-toliko tackaste (ili tolerantno izduzene).

ISO vrednost birate tako da ne oversaturirate nista na slici, ni zvezde ni pozadinu i da se nadje neki kompromis sa kolicinom shuma. Obicno se nikada ne ide na masimalan ISO pa sam zato rekao 3200.

Podaci za taj senzor dati su u sledecoj tabeli, odakle se vidi da je DR drasticno pada od 1600 na dalje:

(https://www.cloudynights.com/uploads/gallery/album_9403/gallery_260532_9403_11242.png)
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 11, 2023, 03:44:01 pm
Imaju stolice u Jysk-u.
Nisu udobne ali nisu ni skupe hahaha
Title: Re: Star party - Letenka 2023
Post by: mboskovic on August 11, 2023, 10:06:40 pm
Bravo Magellan!!
I see that a great and large team is gathering. I'm really sorry that I'll miss it! :(
I wish all of you to enjoy yourselves and to "catch" as many Perseids as possible!
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 12, 2023, 01:35:16 am
Dont you worry buddy, i have a feeling that people who will be joining us will get addicted to star parties, just like we did, and they will keep on joining us on next ones so you will have opportunities to enjoy in a large star party (minus the meteor shower, at least for this year that is).

But you will be greatly missed on this one, for sure.

I am not sure why we switched to using english, i guess because of our foreign friends, this star party will be so international hehe

I cant wait to meet you all up there
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 12, 2023, 11:17:36 am
Par saveta, ponesite nesto toplije da obucete jer sam sinoc bio napolju i bilo je pohladno.
A s obzirom da necemo igrati kolo po livadi da se zagrejemo, ponesite nesto toplije da obucete.

Takodje, moja preporuka su neke cipele, opet i zbog hladnoce ali vise jer je ta livada malo manje uredjena od same Letenke.


A few advices for your foreign friends, take with you some warmer chothes to put on as the night gets colder.
Also id recommend shoes instead of sneakers/joggers.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 12, 2023, 05:26:33 pm
Time of the meetup is flexible, between 8-9PM

See you there

Nacicemo se gore izmedju 8-9 sati

Vidimo se gore
Title: Re: Star party - Letenka 2023
Post by: goran.nikacevic on August 12, 2023, 09:00:37 pm
Mi smo stigli, na livadi smo koja je ranije recena.
Ova:
https://maps.app.goo.gl/EqSfRynSsn5kvPge6

Vidimo se 🙂
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 13, 2023, 12:23:27 pm
E pa da vam napisem samo da je sinoćni Star Party bio veoma uspešan.
Svi koji su najavili da ce doci su došli a doslo je i više ljudi nego sto smo očekivali.
Po nekim mojim procenama mislio sam da ce nas biti oko 10-12 maksimalno medjutim, naši ruski i beloruski prijatelji su nas jako pozitivno iznenadili kada su se pojavili sa tri vozila, od kojih je jedan minivan hehe
Katerina je sa sobom povela jos četrnaest ljudi, a Aleksej je doveo svoga sina.
Imali smo i drugaricu iz Kine.

Ukupno nas je bilo trideset. TRIDESET
Da li vam je sad krivo, da tebi sto ovo citaš a lomio si se da li da dodješ ili ne, sto niste došli.

Bilo je i vizualaca i astrofotografa.
I iskusnijih i manje iskusnih astronoma amatera.
Svi koji su bili imali su prilike da pogledaju kroz teleskop, neki od njih i po prvi put.

Potrudili smo se da se svi lepo provedu i iako se nismo uvek najbolje razumeli zbog jezičke barijere, opet smo uspeli da nadjemo zajednički jezik u vidu ljubavi prema astronomiji.

Nadam se da su se svi koji su bili lepo proveli kao sto sam i ja i da ce nam se pridruziti opet na nekom od narednih Star Partija
Title: Re: Star party - Letenka 2023
Post by: Katerina on August 13, 2023, 03:52:05 pm
Dear friends!
I want to thank you from all of our unexpectedly huge and a little confused company. From each and every one of you.
Discussing among ourselves the impressions of the trip, everyone has agreed that the warmth of your meeting overshadowed even the delight of the starry sky and all those beautiful pictures you showed. I'm not joking or exaggerating! The way you welcomed us was truly amazing! Thank you so much!
I would be very grateful for your contacts on social networks so that we can follow and see your beautiful pictures. And of course, I look forward to seeing you again.
Thank you very much once again.
It was wonderful!
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 13, 2023, 04:48:33 pm
Whoops, i forgot the english version of the "report" hehe

Quote from: undefinedWell, let me just write to you that last night's Star Party was very successful.
 Everyone who announced that they would come came, and more people came than we expected.
 According to some of my estimates, I thought there would be around 10-12 of us maximum, however, our Russian and Belarusian friends surprised us very positively when they showed up with three vehicles, one of which is a minivan hehe
 Katerina brought fourteen more people with her, and Aleksey brought his son.
 We also had a friend from China.

 There were thirty of us in total.  THIRTY
 Are you guilty now, that you are reading this and you were debating whether to come or not, because you didn't come.

 There were also visualists and astrophotographers.
 Both experienced and less experienced amateur astronomers.
 Everyone who was there had the opportunity to look through the telescope, some of them for the first time.

 We tried to make everyone have a good time and even though we didn't always understand each other the best because of the language barrier, we managed to find a common language again in the form of a love for astronomy.

 I hope that everyone who was there had a good time as I did and that they will join us again at one of the next Star Parties.

We are most grateful for all of your company last night, and are looking forward to repeating this perhaps when the next new moon arrives.

I forgot to ask you if you brought your DSLR and if you took any pictures with it?

You can find me on Instagram by the name "astro_fun_times"
(Its a new account made a few days ago)
Title: Re: Star party - Letenka 2023
Post by: nemars on August 14, 2023, 01:35:59 pm
(https://i.ibb.co/5jrwRvG/andromeda.jpg)

Evo rezultata prvog pokusaja fotke Andromede bez trekinga. Canon 600D, 50mm, f/1.8, ISO 3200, 697x2s (nakon sto su rucno pobrisane fotke sa avionima, satelitima, meteorima), stack, autostretch, crop i color calibration u Siril-u (prvo photometric, pa onda samo ono sa background i object kad se selektuje). Svakako sad treba uciti kako ovo obraditi.
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 14, 2023, 02:23:09 pm
Quote from: nemars on August 14, 2023, 01:35:59 pmEvo rezultata prvog pokusaja fotke Andromede bez trekinga.

To je odličan rezultat za prvi put.

Naravno, objektiv nije baš oštar na F/1.8 ali ne vredi da se stopira ako se ide sa kratkim ekspozicijama bez montaže.

Verovatno se moglo ići i sa malo dužim ekspozicijama, vredi eksperimentisati dok se ne uđe u štos.

Možda i razmisliti o jednostavnom star trackeru - nešto u sopstvenoj izvedbi?
Ja pravim neki 3d štampani jednostavni tracker, pa kad ga završim možda bi ste ga hteli pozajmiti na probu?
Title: Re: Star party - Letenka 2023
Post by: nemars on August 14, 2023, 02:29:23 pm
Videcemo kako ce jos da ispadne kad naucimo da obradimo. Nemamo pojma trenutno sta radimo, hteli smo da probamo i druga podesavanja al smo se malo upetljali pa je ispalo za sad ovako. Hvala za ponudu, definitivno bismo bili zainteresovani da probamo neko pracenje nekad.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 14, 2023, 06:19:59 pm
Slika je odlicna. Bez pracenja je dobar rezultat dobijen.
Ja licno bih kropovao jos malo da se ne vidi ova koma po ivicama i malo bih smanjio zvezde kako bi sama galaksija dosla do izrazaja, e sad ako me pitas kako, nemam pojma, i ja bih morao da gledam YT kako se to radi hehe

Uzgred, trebao si postovati u messierovim objektima sliku, ovo nije prava tema jer cemo odlutati od onoga cemu je ova tema namenjena 😉
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 14, 2023, 06:26:23 pm
Što? I rezultati sa star party-a su priča vezana za star party :D

Evo, ja sam baš sad pripalio stelarijum da pregledam šta sam sve posmatrao sa 80mm.

5 galaksija - M31, M33, M51, M81, M82. Tražili smo i M101 al je nismo našli, nije se dala. Bilo je tu i drugih objekata poput M17 - Swan, M27 pa i SH-2 101 Tulip nebula, zatim M13 pa još par otvorenih jata. I naravno i Saturn (za divno čudo, Jupiter nisam posmatrao sa 80mm ni generalno, kasno se podigao).
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 14, 2023, 06:40:48 pm
Aaa ok ok, ako global moderator odobri mesanje tema ja nemam nista protiv, nisi  ti prestrog moderator kao na drugim forumima hehe
Tako se odmah dobije packa hahaha

M101... Veoma tezak objekat. Povrsinska osvetljenost mu je raštrkana tako da je pogrebno tamno nebo da bi se videlo.
Mozda zato sto je vec bio relativno nisko?

Ja sam dugo pokusavao da ga vidim iz dvorista dok mi amerikanci nisu rekli da su M101 i M110 ako se ne varam, a mozda neki drugi objekat, ne secam se sad bas najbolje, jako teski za uociti.

Onda smo jednom otisli na tu livadu, zima je bila ako se ne varam, M101 je bio blizu zenita i uspeo sam perifernim vidom da ga ulovim. Osecaj je bio neverovatan jer mi je izmicao dugo vremena iako sam bio na lokaciji gde bi trebao da bude.
Title: Re: Star party - Letenka 2023
Post by: nemars on August 14, 2023, 06:49:57 pm
Hvala za komentare/savete. Ovo je samo stack i malo crop i automatske opcije iz Sirila bez bilo kakvog ozbiljnog procesiranja (jer jos uvek ni ne znamo nista o tome :)). Mozda kad se malo budemo igrali u nekom programcicu, pa dobijemo neki zanimljiviji rezultat okacim u drugu temu. Nisam razmisljao o tome da cu potencijalno spamovati ovu, izvinjavam se. Neko je pitao kako bez trekinga dok smo bili na okupljanju pa sam mislio da je mozda interesantno za videti rezultat.
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 14, 2023, 08:31:40 pm
Quote from: Magelan118 on August 14, 2023, 06:40:48 pmM101... Veoma tezak objekat. Povrsinska osvetljenost mu je raštrkana tako da je pogrebno tamno nebo da bi se videlo.
Mozda zato sto je vec bio relativno nisko?

Kaže stelarijum, M101, surface brightness mag14.82 po ark sekundi kvadratnoj, M33 mag14.10, znači nešto malo tamnija.

Moguće je da je bilo do doba noći uz do malo razlike u intenzitetu. Na početku su još pristizali ljudi i nismo imali adaptaciju a i više je svela gorelo po gradovima pa je verovatno i nebo bilo svetlije.

Obe galaksije su bile na sličnom azimutu kad je probano posmatranje, tako da ekstincija možda nije bila faktor.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 14, 2023, 10:47:35 pm
Bez trackinga je super ispala slika same galaksije. To sto su zvezde komirane nema veze sa trackingom vec je to samo mana samog objektiva ali odlicna slika, jos za prvi put... Ihhaaa

A obrada je po meni najgori i najmrzovoljniji deo celog procesa. Ali je on pola posla...

M33 se daleko lakse vidi od M101. E sad da, to sto je M101 bio nisko i blize svetlosnoj kupoli itekako igra ulogu u tome da ga ispere i da se teze vidi.

Jedinos to mozes da uradis je da ne propustas vise star partije pa ces imati vise prilika da je upecaš 😁
Title: Re: Star party - Letenka 2023
Post by: Aleksej on August 17, 2023, 01:37:27 am
Veliko hvala svima na toploj i prijatelskoj atmosferi.
Pogledali mnogo objekata u dvogled. Bio sam iznenaden koliko mnogo mogu da vidim uz ga. Video sam M31 sa satelitama, M33, M51, M11 wild duck, M27 dumbbell, NGC77892 Caroline's Rose, naravno Plejade i jos mnogo toga. Pokusao sam da razgledam Severnu Ameriku, i mislim da video sam, ali samo perifernim vidom.

Takoje mnogo gledali smo uz teleskopi. Saturn i Jupiter bili su neverovatni.

Cela noc posmatranja je proletela kao 5 minuta.
jedva cekam da dodem na sledecu Star Partiju :)
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 17, 2023, 06:37:05 am
Drago mi je sto ste bili i da ste se lepo proveli i ti i tvoj sin.

Svasta ste videlo kroz taj dvogled.

Cekamo vas na sledecem star partiju

Title: Re: Star party - Letenka 2023
Post by: skholman on August 18, 2023, 12:44:44 pm
Dear all!

First, sorry for speaking English here ) I'm Sergei, an astrophotographer from Russia living in Belgrade now. I've brought with me my setup of 150mm Newton / Askar FMA180 on HEQ5 mount and now I'm thinking to start shooting in Serbia. Although I wasn't able to join you last time, I will readily participate in your future star parties! Also, I will appreciate your advice on good astro spots under dark skies in Serbia.

Cheers!
Title: Re: Star party - Letenka 2023
Post by: vlaiv on August 18, 2023, 02:02:57 pm
Hi and welcome.

Hope to see you on the next star party.

In the mean time, I hope more people will recommend their favorite observing locations.
I can name two popular ones:

45.13632060314173, 19.67787982096786
(that is Letenka mentioned in this thread)

also, around this location:
44.151887418762065, 19.690803997072564

Haven't personally been on a second one, but I've heard that people use as dark location.
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 18, 2023, 03:05:02 pm
Hello Sergei, welcome to the forum and we hope to see you on one of our next star parties.

Nobody will mind if you speak english or any other language as long as we can understand eachother.

Yeah, Vlaiv has showed you both dark locations we know. I have personaly been to both and "Debelo brdo" location (because coordinates are hard to read :) ) is quite dark (for Serbia).
If you get the chance to go there i highly recommend it but you should also come check out out star party location too as soon as we organize next one.

Have fun and dont be shy to ask anything
Title: Re: Star party - Letenka 2023
Post by: skholman on August 18, 2023, 03:58:59 pm
Guys, many thanks welcoming me!

I've read also of Zagajička brda near Deliblato 44.93212285298494, 21.18655885115852


Hope to see you on the next party
Title: Re: Star party - Letenka 2023
Post by: ε Aurigae on August 18, 2023, 06:34:18 pm
hi Skholman,

I am from belgrade too - send me DM if you want to catch up some time and to grab beer or two
Title: Re: Star party - Letenka 2023
Post by: Astro_fun_times on August 18, 2023, 08:22:57 pm
Why dont people share google maps location instead of coordinates...

I dont have coordinate map in my head hehe

But yeah, Deliblato is dark, but, someone has said how there are some wild animals, coyotes or so there.
That being said, someone has to take the risk and report back so it may as well be you hehe

Few of us live in or near Novi Sad so closest "dark" location to us is Letenka so we tend to meet there due to covenience, not because its super dark, but its "darkest we have" and its relatively close.

Debelo brdo is quite nice.
Some locations in eastern Serbia also seem promising but i dont think anyone tested eastern Serbia (so it may as well be you? No i am just kidding hehe)

We hope to see you at our next star party (but we have no clue when it will be so keep checking forum for updates on that)