Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  M 13  ·  NGC 6205
M13 (test shot), 


            Dennis Moeller
M13 (test shot)
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M13 (test shot)

Technical card

Imaging telescopes or lenses: Sublambda Engineering SL HypA 16" f:3,5

Imaging cameras: Sony NEX-5N mod

Mounts: EQ 8

Software: Pixinsight 1.8

Filters: Astronomik IR-Block

Dates:May 11, 2018

Frames:Astronomik IR-Block: 6x120" ISO200 bin 1x1

Integration: 0.2 hours

Avg. Moon age: 25.33 days

Avg. Moon phase: 18.64%

Bortle Dark-Sky Scale: 7.00

Mean FWHM: 2.00

Temperature: 14.00

Basic astrometry details

Astrometry.net job: 2058485

RA center: 16h 41' 43"

DEC center: +36° 27' 32"

Pixel scale: 0.686 arcsec/pixel

Orientation: 11.468 degrees

Field radius: 0.326 degrees

Resolution: 1824x1267

Data source: Unknown


Having some trouble with my guiding telescope I switched to an off-axis guider and made a few test shots through the main telescope from my light polluted backyard. This evening I realized that the seeing was better than usual. How good it was I realized the next day when stacking the images. The green channel showed stars a little bit better than 2 arcseconds. Unfortunately, I made only 6 frames a 120" but want to share the result with you, nevertheless.


Sky plot

Sky plot


M13 (test shot), 


            Dennis Moeller