#siril — Public Fediverse posts

Another image I could keep reprocessing forever and never be entire satisfied with: the Rho Ophiuchi Cloud Complex.

A total of 3143 individual 30 second exposures went into this 4 panel mosaic image (over 26 hours total exposure time), all taken with my little Seestar S30 Pro smart telescope in my suburban Sydney back yard (Bortle 7, at least). Processed in Siril with RC Astro, SyQon and VeraLux scripts. Scaled down to 50% size for posting, full resolution version here: https://drhotdog.smugmug.com/Nature/Seeing-Stars/i-C6FNrn7/A

The big challenge here is removing the sky background gradients when there's basically no truly empty patches of sky to use as references. To really improve on this I think I'd have to take my Seestar away from Sydney's light pollution and get images that don't have lots of background light in them to start with.

#Astrophotography #Seestar #SeestarS30Pro #TMMT #ThirtyMillimetreTelescope #Siril #RCastro #SyQon #VeraLux

OK, that's it. Need to stop fiddling with this now. Same as the previous one with a slight tweak of the black level.

I think this crop is a better picture than the full mosaic too. Full res here: https://drhotdog.smugmug.com/Nature/Seeing-Stars/i-vjXSLcv/A

#Astrophotography #Seestar #SeestarS30Pro #ThirtyMillimetreTelescope #TMMT #Siril #VeraLux #RCastro

Or maybe the answer is none of the above. Keep the greatly reduced stars but don't darken the background quite so much so more extended faint details are visible.

#Astrophotography #Seestar
#Seestar30Pro #ThirtyMillimetreTelescope
#TMMT #Siril #VeraLux #RCastro

Meanwhile I've fallen down a rabbit hole trying to decide how best to process my big Eta Carina mosaic. All the stars, slightly reduced stars, or greatly reduced stars? Too much and the stars do distract from the nebulosity, which is the main subject of the image, but too few and it looks sterile and artificial. I'm struggling to find the right balance.

The three crops from part of the mosaic run the range from all the stars to greatly reduced. I keep changing my mind about which is best, or whether I need to go somewhere in between them. I also think the answer is different for this crop, and for the full mosaic (which isn't as full of bright nebulosity).

#Astrophotography #Seestar
#Seestar30Pro #ThirtyMillimetreTelescope
#TMMT #Siril #VeraLux #RCastro

I got some more data on the Helix Nebula too, now totalling just over 11 hours. I think this is about as good as it's going to get with the Thirty Millimetre Telescope.

#Astrophotography #Seestar
#Seestar30Pro #ThirtyMillimetreTelescope
#TMMT #Siril #VeraLux #RCastro

It may be the most photographed deep sky object in the night sky, but the Orion Nebula is still rewarding. Here's what I got from an hour and 40 minutes of exposure time just before morning twilight last night.

As usual all data from my Seestar S30 Pro, processed in Siril with RC Astro and VeraLux scripts.

#Astrophotography #Seestar #Seestar30Pro #ThirtyMillimetreTelescope #TMMT #Siril #VeraLux #RCastro

Gilles, avec l'aide de Matthieu, proposent le Triplet du lion #M65 #M66 #NGC3628
65 x180s soit 3h15
Newton 200/1000
Eq6r pro
Correcteur de coma
APN Eos 6d
Autoguidage lunette 60x240 + ASI 224mc
Acquisition NINA + PHD2
#Siril photoshop + lightroom + faststone
#astrophtography #astronomy #astrodon