Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  NGC 7013, NGC 6995, Network nebula, NGC 6992, IC 1340, Veil nebula, Lace-work nebula, Filamentary nebula, NGC 6960, The star 52Cyg
Getting plate-solving status, please wait...
Cygnus Loop/Veil Nebula - widefield, 


            Ivan Nair
Cygnus Loop/Veil Nebula - widefield

Cygnus Loop/Veil Nebula - widefield

Technical card

Imaging telescope or lens:Asahi Pentax SMC Takumar 200mm F/4

Imaging camera:ZWO ASI 1600 MM Cool

Mount:iOptron CEM 60

Guiding telescope or lens:ZWO 60mm f/4.6 Guidescope

Guiding camera:ZWO ASI 120MM-S

Filters:ZWO OIII 36mmZWO Ha 36mm

Resolution: 4447x3312

Dates:Aug. 12, 2019Aug. 14, 2019Aug. 20, 2019Aug. 21, 2019

ZWO Ha 36mm: 186x240" (gain: 139.00) -10C bin 1x1
ZWO OIII 36mm: 155x240" (gain: 139.00) -10C bin 1x1

Integration: 22.7 hours

Darks: ~20

Flats: ~20

Flat darks: ~20

Avg. Moon age: 16.31 days

Avg. Moon phase: 85.10% job: 2875232

RA center: 313.017 degrees

DEC center: 30.930 degrees

Pixel scale: 3.912 arcsec/pixel

Orientation: 303.244 degrees

Field radius: 3.013 degrees

Data source: Backyard


First light (for me!) of a 40 year old, $60 lens from Ebay with narrowband imaging. Without any autofocus, I imaged one filter per night and didn't touch the focus once it started. Unfortunately due to clouds I lost about 2 hours on my OIII images but I think I still had sufficient data.
This was imaged at F/4 but I should have probably used F/5.6 to get better stars

This old lens seems to be excellent for narrowband imaging on a tight budget but may not be very good for LRGB imaging but i'll certainly give it a try sometime.

I went with a slightly different color composition than the standard Red/Blue combination.



Ivan Nair
License: None (All rights reserved)


  • Final
    Cygnus Loop/Veil Nebula - widefield, 


            Ivan Nair
  • Cygnus Loop/Veil Nebula - widefield, 


            Ivan Nair


Obligatory starless variation with Starnet++

Sky plot

Sky plot


Cygnus Loop/Veil Nebula - widefield, 


            Ivan Nair