M81 - Bode

Stanislav Borodinov

4163

Deep Sky

Mar 20th, 2026

539

NGC 3031

Resolution:: 5187x3458 px
File size:: 8561 KB

Show astrometry on hover

Technical information

Telescope/Lens: Celestron EdgeHD 11
Camera: ZWO ASI2600MC DUO
Mount: EQ8
Software: NINA, Pixinsight

Location: Иркутск, Россия

Light pollution

Green, Bortle 4 zone

Exposure

360 × 180″ · ISO/Gain: 100

Total exposure: 18 h 0 m

Comments

oeswww

Quite beautiful. But there's a feeling that the background wasn't fully processed, even though it's already grayish. It seems like the entire galaxy was stretched using a mask, but a "piece" at the bottom was forgotten. Or perhaps that's its true brightness. What do you say about this?

Mar 20th, 2026

Stanislav BorodinovReply to oeswww

Thank you! I only used the mask for color saturation. At this level of integration, no details from the background are intruding. I wanted to pull out the IFN using an inverted mask, but it's still too noisy for now. Therefore, the background brightness is close to its natural state.

Mar 21st, 2026