Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5477
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M101 & NGC 5477 (HaRGB), 



    
        

            Mike Oates
M101 & NGC 5477 (HaRGB)
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M101 & NGC 5477 (HaRGB)

Getting plate-solving status, please wait...
M101 & NGC 5477 (HaRGB), 



    
        

            Mike Oates
M101 & NGC 5477 (HaRGB)
Powered byPixInsight

M101 & NGC 5477 (HaRGB)

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106 ED

Imaging cameras: Starlight Xpress SX-814 Trius Monochrome CCD

Mounts: Sky-Watcher EZ-EQ6 GT

Guiding telescopes or lenses: Opticstar AR80S (f5) Gold Guidescope

Guiding cameras: Starlight-XPress Lodestar Autoguider

Software: PIXINSIGHT 1.8

Filters: Ha 3nm  ·  Red  ·  Green  ·  Blue

Accessory: Lakeside Astro Motor Focus System  ·  Starlight Instruments FTF3545B-A Focuser  ·  Starlight-XPress Filter Wheel


Dates:Feb. 6, 2015

Frames:
Blue: 44x180" (2h 12') -25C bin 1x1
Green: 35x180" (1h 45') -25C bin 1x1
Ha 3nm: 30x1390" (11h 35') -25C bin 1x1
Red: 31x180" (1h 33') -25C bin 1x1

Integration: 17h 5'

Flats: ~30

Bias: ~200

Avg. Moon age: 17.02 days

Avg. Moon phase: 94.35%


Basic astrometry details

Astrometry.net job: 544710

RA center: 14h 3' 18"

DEC center: +54° 23' 6"

Orientation: 179.706 degrees

Field radius: 0.455 degrees


Resolution: 2736x2045

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Description

Taken over 6 nights from 27 Dec 2014 to 6 Feb 2015. Made using Ha and separate R, G, & B filters. This image is a crop from a wider field . All processing is done in PixInsight.

The Ha exposures were of different lengths, 600, 900, 1200 & 1800s.

NGC 5477 is a small galaxy to the left of the image.

I never thought I would be able to take RGB images from my home in light polluted Manchester UK. I believe this is only possible due to the Astrodon filters I use which has a slight gap between the green and red. The subs I have used here are just 180s but I know I can go up to about 8min which I will be doing from now on.

Note: The first upload was the wrong scale, the second version is the correct size.

Comments

Revisions

  • M101 & NGC 5477 (HaRGB), 



    
        

            Mike Oates
    Original
  • Final
    M101 & NGC 5477 (HaRGB), 



    
        

            Mike Oates
    B

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M101 & NGC 5477 (HaRGB), 



    
        

            Mike Oates