Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 106  ·  NGC 4231  ·  NGC 4232  ·  NGC 4248  ·  NGC 4258


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Technical card

Imaging telescopes or lenses: Celestron C8

Imaging cameras: Canon 1000D

Mounts: Vixen GP

Guiding telescopes or lenses: Celestron C8

Guiding cameras: QHY CCD QHY5L-II

Focal reducers: Celestron f/6.3 Focal Reducer

Software: Startools 1.3.5  ·  Cartes du ciel  ·  PHD2 Guiding  ·  EQMod  ·  ASCOM  ·  APT  ·  Deep Sky Stacker  ·  AstroEQ

Accessory: Lacerta Bahtinov Mask  ·  Celestron Radial Guider

Dates:April 2, 2015

Frames: 26x240" (1h 44') ISO800

Integration: 1h 44'

Bias: ~20

Avg. Moon age: 12.96 days

Avg. Moon phase: 96.36%

Bortle Dark-Sky Scale: 7.00

Basic astrometry details

Astrometry.net job: 624937

RA center: 12h 18' 58"

DEC center: +47° 18' 25"

Pixel scale: 1.834 arcsec/pixel

Orientation: -5.081 degrees

Field radius: 0.412 degrees

Resolution: 620x357

Locations: Backyard, Dresden, Sachsen, Germany


Work in progress, trying to get as many subs as possible. Tracking remains somehow erratic, probably due to my mount being pushed to its limit. Original image scale is 0.91"/pixel, here rescaled to 50%. Raw files were first converted to linear TIFF files, then stacked using DSS and finally processed in Startools. The resulting image was slightly tweaked with Photoshop.


Sky plot

Sky plot





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