Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205  ·  NGC 6207
A long time ago in galaxies far, far away..., 



    
        

            Marc Furst
A long time ago in galaxies far, far away...
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A long time ago in galaxies far, far away...

A long time ago in galaxies far, far away..., 



    
        

            Marc Furst
A long time ago in galaxies far, far away...
Powered byPixInsight

A long time ago in galaxies far, far away...

Equipment

Imaging Telescopes Or Lenses
Pentax 75 SDHF
Imaging Cameras
ZWO ASI533MC Pro
Mounts
10Micron GM1000 HPS
Filters
Astronomik IR 807
Software
Adobe Photoshop · Siril

Acquisition details

Dates:
July 22, 2021
Frames:
Astronomik IR 807: 60×300(5h) (gain: 100.00) 0°C
Integration:
5h
Darks:
59
Bias:
59
Avg. Moon age:
12.99 days
Avg. Moon phase:
96.46%
Bortle Dark-Sky Scale:
7.00
Temperature:
20.00

Basic astrometry details

Astrometry.net job: 4818505

RA center: 16h41m33s.8

DEC center: +36°2801

Pixel scale: 1.542 arcsec/pixel

Orientation: 313.836 degrees

Field radius: 1.171 degrees

Resolution: 3858x3871

File size: 7.4 MB

Data source: Backyard

Description

The surrondings of the Great Hercules Globular Cluster were imaged using a 75mm refractor and an infrared filter. The Bayer matrix on the OSC camera is basically transparent to IR light, which transform the OSC camera into a kind of mono camera. Imaging in IR is much less sensitive to artificial light pollution.
All light below 800nm has been cut off.

Using the software "Carte du Ciel" I managed to identify some galaxies and their magnitude, and I tried to find their distance using the CDS portal (http://cdsportal.u-strasbg.fr/ ).

Comments

Sky plot

Sky plot

Histogram

A long time ago in galaxies far, far away..., 



    
        

            Marc Furst