SH 2-129 region with the Squid

UrmasX

2532983

Deep Sky

Mar 23rd, 2025

1323

Resolution:: 1947x2387 px
File size:: 2897 KB

Photo description / processing

Tried HAC125 on the Squid. Despite replacing the camera mount, the sensor tilt remained. Maybe it needs collimation too. In one corner, the stars are sausages, in the other, donuts. The Squid appeared somewhat faintly, everything is drowning in noise. Seems like the idea of shooting faint deep-sky with an uncooled camera is not such a great idea...

Technical information

Telescope/Lens: Sky-Watcher HAC125
Camera: QHY5III585C
Mount: iOptron HEM15
Accessories: ToupTek AAF
Software: N.I.N.A., Siril, StarNet++, GraXpert

Location: Токсово, Россия

Light pollution

Red, Bortle 7 zone

Date taken: Mar 21st, 2025

Exposure

598 × 30″ · ISO/Gain: 69 · фильтр Optolong L-eNhanced · Mar 21st, 2025

Total exposure: 4 h 59 m

Comments

Oleg Novoselov

It seems like the idea of shooting faint deep-sky objects with an uncooled camera isn't the best...
Such faint objects are more likely in the red zone; you can still manage in winter, but in summer you have white nights, so it doesn't really matter whether it's cooled or not.

Mar 23rd, 2025

UrmasXReply to Oleg Novoselov

Well, there are still about 6 hours of darkness left. A bit earlier, I shot this same object with the 2600Air using a dual-band filter and a quad. With the dual-band filter on the 2600, the Squid Nebula shows up a bit better.

Mar 23rd, 2025

Oleg Novoselov

Then the bits are to blame for everything, the difference between 12 and 16 is big and the dynamic range is different.

Mar 23rd, 2025

UrmasXReply to Oleg Novoselov

This combination turned out quite well. Just need to align the field...

Mar 23rd, 2025

Oleg NovoselovReply to UrmasX

Because the Rosette Nebula is so bright overall, the contrast is overwhelming, and here the Squid Nebula is almost invisible.

Mar 23rd, 2025

UrmasXReply to Oleg Novoselov

From my balcony, the Rosette Nebula is no longer visible, so I have to experiment in the Cat's Paw... Squid Nebula.