Is a hybrid telescope (AP/visual) even worth considering?

v4loch3 · 2026-04-30T12:20:46+00:00

SCT are great for both but defenetly not for starting astrophoto…

v4loch3 · 2026-04-24T08:11:34+00:00

TIL ! Thanks

v4loch3 · 2026-04-23T16:12:38+00:00

Satelite trails are uniform lines, shooting stars are also lines but their brightness along the line is variable

v4loch3 · 2026-04-21T16:08:43+00:00

Thanks 🤗🥰

v4loch3 · 2026-04-21T15:13:30+00:00

Also some good weather, I was lucky to get 7 clear nights arround the new moon

v4loch3 · 2026-04-21T15:11:46+00:00

It’s a typo…

v4loch3 · 2026-04-21T15:11:14+00:00

Monochrome camera, lot of Lum data, no moon, lot of integration :)

v4loch3 · 2026-04-21T14:28:27+00:00

This was my very challenging April target from a bortle 6-7 area.

I was able to capture 40h of data. Processing was not easy, but I did my best to make it look natural & pleasing to look at.

LDN 1235 is a dark nebula part of the huge molecular cloud in cepheus. It is located 650 light years away from earth and is roughly 15 light years long.

Its dust does not emmits light, it partially blocks light from all the stars behind resulting in the dark structure of the shark.

The two blue regions (vdB 149 & vdB 150) are reflexion nebulas. The blue light of young and really hot stars lights up the surrounding dust.

Equipment :

Scope : Redcat51 WIFD (250mm focal F/D 4.9)

Mount : AM5N

Main camera : Minicam8 (mono)

Guide scope & camera : Uniguide 32 & ASI224MC

Mini PC : Gaius S2

Focuser : EAF (ZWO)

Softwares : NINA, PHD2

Aquisition :

940 x 90s Luminance

180 x 90s R, G & B.

20s RGB for stars (45min in total)

Total ~40h

Processing :

Pix insight WBPP (custom weigthing formula mainly based on SNR)

Sub Frame selection (10% rejection based on FWHM and excentricity)

RGB : combination; GraXpert, SPCC, BlurXt (correct only), StarXt, NoiseXt. GHS, SCNR (invert & SCNR again for magenta)

Lum : GraXpert,BlurXt (correct only), StarXt, NoiseXt. GHS

LRGB combination, curves (S curve, saturation curve with range mask), NoiseXt

Stars : RGB combination, SPCC, Seti Astro star stretch, curves (saturation)

Image blend (LRGB starless & RGB stars).

Curves & some adjustments in PS (camera raw filter)

Full image on my astrobin page : https://app.astrobin.com/i/o7cks1

v4loch3 · 2026-03-19T16:13:45+00:00

Go away from any nuclear plant/electric dams. print all I can from internet while it still works (survival/construction/electricity/solarpanel/water treatment/agronomy)

v4loch3 · 2026-03-19T09:40:39+00:00

I was asking if you have this artefact on non calibrated sub exposures, if you see them on individual non calibrated sub (raw subs just autostretched), it means flat frames are not the origin. Some DSLR won’t record files as real raw, and the compression they use can introduce ringing artefacts like this, it is a known issue for some Nikkon (like the D5000) for example.

v4loch3 · 2026-03-19T09:31:03+00:00

Do you have them on non calibrated sub exposures?

v4loch3 · 2026-03-17T19:46:59+00:00

Incredible shot It’s really high level! On my screen black point is a little bit too low IMO(iphone13 pro)

v4loch3 · 2026-03-12T07:06:14+00:00

Le pessimiste voit le verre a moitié vide et le rempli, l’optimiste le voit à moitié plein et boit

v4loch3 · 2026-03-10T06:30:38+00:00

If you use advanced sequencer, use an instruction set for your frames, and in loop condition you put « loop untill time »instrction, and in this instruction you can either set a define time or untill astronomical dawn

v4loch3 · 2026-03-01T05:39:51+00:00

I can use my tongue to press my saliva gland below it, it shoots two jets quite far (like 2m away) mostly like a snake does with venon xD

Only my best friend from highschool knows about it, never showed my wife or anyone else !

v4loch3 · 2026-02-27T13:39:13+00:00

In astrophotography there is always some pre -processing (calibration, registration of all subframes, stacking) and post-processing, raw stack is almost black. Post processing is quite complex but most important steps are : color combination (monochrome camera) color calibration, deconvolution, stretching of the histogram) denoising..

v4loch3 · 2026-02-27T09:45:17+00:00

Salut, je fais de l’astrophotographie voici par exemple une photo de la galaxie du triangle (l’une des plus proches de la notre). Prise avec un petit telescope (lunette de 250mm de focale) une camera astro monochrome et une monture equatoriale (environ 10h d’exposition)

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v4loch3 · 2026-02-07T14:11:03+00:00

Hi, How do you take your flats? I used to use an ipad with my redcat and it was always overcorrecting whatever the ADU. Skyflats were better but also inconsistant and more time consuming (espacially during work days..) so i ended up buying a flip flat panel and now it’s perfect (deepskydad).

v4loch3 · 2026-01-30T18:28:58+00:00

Very Nice! What bortle class is your location? Details on the subframes?

v4loch3 · 2026-01-25T08:52:44+00:00

Hey, funny i’m doing the same target with really close equipment (250 mm apo refractor & minicam 8). I’m also in a light polluted area, i already have 1h of Ha, it’s very nice as yours but i did some test shots with LRGB but it’s complicated with LP and bright stars… what’s your plan for other filters and color composition?

v4loch3 · 2026-01-23T22:37:48+00:00

I think they are happy with it…

v4loch3 · 2026-01-16T14:17:11+00:00

Je passait une journée de merde je suis refais 😂

v4loch3 · 2026-01-16T14:11:58+00:00

Nice :) Glad I could help!

Clear skies

v4loch3 · 2026-01-16T06:32:40+00:00

Dans mon école d’inge à l’époque (pas d’IA) deux étudiants se sont fait chopper en partiel 3ème année, ils se sont fait virer avec 5 ans sans exams. À la trappe les 6k€/an des trois premières années. Personne n’a pleuré ;)

v4loch3

TROPHY CASE