The Umbrella Galaxy In Coma Berenices (NGC4651)

A spiral galaxy in the constellation Coma Berenices.

I photographed it once two years ago, but the umbrella-like structure ended up looking L-shaped, so I was planning to take more photos this season to make it look T-shaped. However, the bad weather has continued day after day, making further shots difficult, so I decided to re-edit the image.
I think I've managed to make the filaments of the umbrella-like structure look T-shaped.

髪の毛座にある渦巻き銀河

2年前に一度撮影したことがあるが、傘の部分がL字になってしまったのでT字になるように今期に撮り増ししようと思っていた。でも連日の悪天候で続き、撮り増しが難しそうなので、再編集することにした。

なんとか傘の部分のフィラメントがTじに見えるようになったかな。

Place: Astropical@CSky Observatory (Bortle Class 3, Moon Phase 56.4%)

Shot Date 7th / Feb / 2024 03:05 (UTC+7) 3 nights

Re-Processing: 5th /May / 2026 (UTC+7)

TS TSRC10T Carbon Truss + Reducer x 0.67　(250mm F/5.3 f/1340mm)

Filter: Antlia V-series L, SVbony RGB set

R: 7X 180Secs Total 21minute

G: 7X 180Secs Total 21minute

B: 12X 180Secs Total 36minute

Total 3 hour 52 minutes

Palette: Target L-RGB

Star L-RGB

Gain: 150 Offset 10

CCD: Player One Altemis-M Pro(IMX492) Bin2

Mount :iOptron CEM70G

De-Rotator : Wanderer Mini V2 (0 Deg)

Guide: iOptron iGuide in CEM70G, No Dec guide.

Controler: NINA Dither, PHD2

Pre-Processing APP Drizzle None

Post-Processing PI,Affinity Re-sampling 120%

Shot By Taro Seki Astropical.uk