Hemisphere:  Northern  ·  Contains:  M 101  ·  M101  ·  NGC 5457  ·  NGC5447  ·  NGC5449  ·  NGC5450  ·  NGC5451  ·  NGC5453  ·  NGC5455  ·  NGC5461  ·  NGC5462  ·  NGC5471  ·  Pinwheel galaxy
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M101 - Pinwheel Galaxy, 


            Mark Spruce
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M101 - Pinwheel Galaxy

Technical card

Imaging telescopes or lenses: Meade LX90 8" f/10

Imaging cameras: Atik 314 L+ Mono Atik 314L+

Mounts: Skywatcher AZ-EQ6 GT

Guiding telescopes or lenses: Orion ShortTube 80mm f/5.0

Guiding cameras: QHYCCD QHY5L-II mono

Focal reducers: Celestron f/6.3 Focal Reducer/Corrector

Software: Nebulosity 4  ·  Photoshop  ·  Astra Image PLUS 5.0

Filters: Xagyl LRGB Filter Set

Accessory: XAGYL Ultra Thin Motorized Filter Wheel - 8 x 1.25" Filters

Dates:May 30, 2016

Frames: 35x300"

Integration: 2.9 hours

Avg. Moon age: 23.19 days

Avg. Moon phase: 38.97%

Astrometry.net job: 3273234

RA center: 14h 3' 11"

DEC center: +54° 20' 55"

Pixel scale: 0.961 arcsec/pixel

Orientation: 161.797 degrees

Field radius: 0.219 degrees

Resolution: 1324x965

Locations: Observatory, Wolverhampton, West Midlands, United Kingdom

Data source: Backyard


M101 - Pinwheel Galaxy
Taken over 2 nights to trial a new guide camera (QHY5L-II mono). The guiding was much better than with my old camera. However I'm still experiencing camera timeouts. I think I have resolved this by running the camera on a dedicated USB cable rather than through a hub, but time will tell. I'm fairly pleased with the result given the ligher skies that we have at this time of year with it never really getting truly dark.



Mark Spruce
License: Attribution-NonCommercial-NoDerivs Creative Commons


  • M101 - Pinwheel Galaxy, 


            Mark Spruce
  • Final
    M101 - Pinwheel Galaxy, 


            Mark Spruce

Sky plot

Sky plot


M101 - Pinwheel Galaxy, 


            Mark Spruce