Hemisphere:  Northern  ·  Contains:  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
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M51 Whirlpool Galaxy, 


            Michael Caller
M51 Whirlpool Galaxy
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M51 Whirlpool Galaxy

Technical card

Imaging telescopes or lenses: Skywatcher Esprit 100 ED

Imaging cameras: ZWO 1600MM-C

Mounts: EQ6 R Pro SkyWatcher

Guiding telescopes or lenses: Altair astro 60mm guide scope Guidescope

Guiding cameras: Altair Astro GP Cam2 130 mono Guide Camrea

Software: Photoshop CC 2019  ·  PixInsight PinInsight 1.8.6  ·  PhD 2  ·  DDS  ·  APT  ·  QHY-CCD Polemaster Software Polemaster

Filters: ZWO 36mm Green Filter  ·  ZWO 36mm Red Filter  ·  ZWO 36mm Blue Filter  ·  ZWO 36mm Luminance Filter

Accessory: Pegasus Astro Ultimate Powerbox Ultimate Powerbox  ·  Pegasus Astro FocusCube  ·  Intel Compute Stick  ·  gamepad Joystick  ·  Homemade GPS unit

Dates:April 25, 2019

ZWO 36mm Blue Filter: 7x300" (gain: 139.00) bin 1x1
ZWO 36mm Green Filter: 3x300" (gain: 139.00) -20C bin 1x1
ZWO 36mm Luminance Filter: 11x300" (gain: 139.00) -20C bin 1x1
ZWO 36mm Red Filter: 11x300" (gain: 139.00) -20C bin 1x1

Integration: 2.7 hours

Darks: ~30

Flats: ~50

Flat darks: ~50

Avg. Moon age: 20.84 days

Avg. Moon phase: 63.68%

Bortle Dark-Sky Scale: 5.00

Basic astrometry details

Astrometry.net job: 3257574

RA center: 13h 29' 53"

DEC center: +47° 11' 38"

Pixel scale: 0.573 arcsec/pixel

Orientation: 92.901 degrees

Field radius: 0.378 degrees

Resolution: 4506x3390

Locations: Backyard, South Croydon, Surrey, United Kingdom

Data source: Backyard


This is my second processed image using my new Rig , as you can see im slowly getting there with my image processing.

I have both Pixinsight and Photoshop CC however I can't seem to process well in Pixinsight and only use for registering images , all image processing is done in Photoshop CC 2019.

I have also learnt how important the luminance layer is to a successful DS image.

Very lucky to still have my rig , slept through my alarm early hours this morning , just as I got the rig inside before work it hammered it down with rain, won't be doing that again.



Michael Caller
License: None (All rights reserved)

Sky plot

Sky plot


M51 Whirlpool Galaxy, 


            Michael Caller

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