NGC281 Pacman Nebula in SHO and RGB

Posted: Oct 12th, 2025

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Technical Info

Telescope/Lens: Askar FRA300 Pro

Camera: ZWO ASI678MM

Mount: ZWO AM3

Guide Scope: ZWO APO 30mm F/5

Guide Camera: ZWO ASI120 Mini

Software: ASIAIR, Siril, GraXpert, StarNet

Accessories: ToupTek 1.25" SHO 6.5 nm, ZWO 1.25" RGB

Exposure:

150 x 150" ISO/Gain: 0 - S

150 x 150" ISO/Gain: 0 - H

150 x 150" ISO/Gain: 0 - O

80 x 15" ISO/Gain: 0 - R

80 x 15" ISO/Gain: 0 - G

80 x 15" ISO/Gain: 0 - B

Orange zoneLight Pollution:

Novosibirsk, Russia

Oct 12th, 2025

NGC281 PACMAN NEBULA IN SHO AND RGB

Telescope/Lens: Askar FRA300 Pro
Camera: ZWO ASI678MM
Mount: ZWO AM3
Guide Scope: ZWO APO 30mm F/5
Guide Camera: ZWO ASI120 Mini
Software: ASIAIR, Siril, GraXpert, StarNet
Accessories: ToupTek 1.25" SHO 6.5 nm, ZWO 1.25" RGB

Novosibirsk, Russia
Light Pollution: Orange zone

Exposure:
150 x 150" ISO/Gain: 0 - S
150 x 150" ISO/Gain: 0 - H
150 x 150" ISO/Gain: 0 - O
80 x 15" ISO/Gain: 0 - R
80 x 15" ISO/Gain: 0 - G
80 x 15" ISO/Gain: 0 - B

The nebula is assembled from SHO. Stars are substituted from RGB. It is visible that in RGB the stars are smaller and have more realistic colors, but after combining, halos appeared around the stars. Two images are provided - with the original stars from SHO and the substituted ones from RGB.<br><br>During imaging, a gain of 0 was used for maximum dynamic range so that the stars would not be overexposed. This turned out to be valid for all channels (small pixel of the planetary camera).

Original size: https://deepskyhosting.com/Dp8vayU
Author: Vladimir Pudov

19 h 45 m

The nebula is assembled from SHO. Stars are substituted from RGB. It is visible that in RGB the stars are smaller and have more realistic colors, but after combining, halos appeared around the stars. Two images are provided - with the original stars from SHO and the substituted ones from RGB.

During imaging, a gain of 0 was used for maximum dynamic range so that the stars would not be overexposed. This turned out to be valid for all channels (small pixel of the planetary camera).

Resolution: 1954x3286 px

Scale: 5339 KB

Vladimir Pudov

Updated

Туманность NGC281 Pacman в SHO

13 Oct, 2025

Еще один вариант обработки. Меньше красного.

Туманность NGC281 Pacman в SHO

12 Oct, 2025

20 h 5 m

Еще один вариант обработки. В звезды добавил канал L. Звезды вырезал через Starnet, но объединил с SHO через пиксельную математику. Поработал с гистограммой туманности, уменьшил синий, добавил крас...

Current photo

Туманность NGC281 Pacman в SHO и RGB

12 Oct, 2025

19 h 45 m

Туманность собрана из SHO. Подставлены звезды из RGB. Видно, что в RGB звезды меньше и имеют более реальные цвета, но после объединения вокруг звезд появились ореолы. Приведены два снимка - с исход...