Hemisphere:  Northern  ·  Contains:  NGC 6820  ·  NGC 6823
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NGC6820 480mm, 


            Thilo Frey
NGC6820 480mm
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NGC6820 480mm

Technical card

Imaging telescopes or lenses: Teleskop Service Triplet FPL-53 APO 80/480

Guiding telescopes or lenses: APM APO 107/700

Guiding cameras: ZWO Optical ASI1600MM-Cool

Focal reducers: TS 2" Flattener

Software: Adobe Photoshop CC 2016  ·  Pixinsight 1.8  ·  Seqence Generator Pro

Filters: Baader HSO 1.25"*

Accessory: QHYCCD Polemaster

Dates:Sept. 23, 2016

Baader Ha 7nm 1.25": 6x900" (gain: 135.00) -20C bin 1x1
Baader O3 1.25'' 8nm: 4x900" (gain: 135.00) -20C bin 1x1
Baader S2 1.25" 8nm: 4x900" (gain: 135.00) -20C bin 1x1

Integration: 3.5 hours

Darks: ~25

Flats: ~25

Bias: ~41

Avg. Moon age: 22.22 days

Avg. Moon phase: 49.20%

Basic astrometry details

Astrometry.net job: 1256108

RA center: 19h 40' 37"

DEC center: +22° 53' 56"

Pixel scale: 1.628 arcsec/pixel

Orientation: -35.473 degrees

Field radius: 1.320 degrees

Resolution: 4656x3520

Locations: Mobile, near Balsthal, SO, Switzerland


Because of some Problems with the star shape in the last session, i fixed the 2nd telescope together with the 700mm, so I was not able to change the position of the 480mm, and fit the position of the picture. I will change this next time, but i checked if the problem was related to the adjustable mounting of the telescope. in the middle, the star shape is now ok. In the edges, i think ist an flattener issue.



Thilo Frey
License: None (All rights reserved)

Sky plot

Sky plot


NGC6820 480mm, 


            Thilo Frey