DeepSkyHosting

M51

yas
1321817
Category:Deep Sky
Published:
1315
M51NGC 5194NGC 5195IC 4277IC 4278
Resolution:
1720x1816 px
File size:
549 KB

Technical information

Telescope/Lens
Celestron EdgeHD 11
Camera
SBIG ST-4000XCM
Mount
Celestron CGE
Guide Scope
SBIG AO-8
Guide Camera
SBIG-ST-4
Accessories
SBIG AO-8 Adaptive Optics Unit
Software
CCDOps, CCDSoft, MaxIm
Location
Подмосковье, Кубинка (недалеко), Россия

Light pollution

Yellow, Bortle 5 zone

Date taken

Exposure

  • 9 × 900″ · ISO/Gain: 0 ·

Total exposure: 2 h 15 m

Photo versions

M51
Updated
M51

May 12th, 2024

8 h 0 m

Imaging May 2023 and 2024

M51
Current photo
M51

May 30th, 2023

2 h 15 m

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Comments

Anth
Excellent detail - awesome!
What focal length was this shot at? With a reducer?
Does the SBIG AO-8 contribute significantly to the detail?
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yasReply to Anth
Taken without a reducer at the native focus. A reducer cannot be used at all with the AO-8. The reducer has too short a back focus. The AO-8 is primarily used for guiding correction to avoid moving the entire telescope. It does not contribute significantly to detail because guiding is performed on faint (12-13 mag) stars, resulting in a guiding frequency of 1-4 Hz.
The AO-8 provides an advantage at frequencies above 10 Hz.
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AnthReply to yas
I had an EdgeHD 11", but it didn't deliver such detail, or maybe I just don't know how to prepare it with this bucket :) The only thing to complain about is the lack of field in the shot.
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