Re: NGC 1961 Galaxy and Neighbors (AP900 + 8" f/4 Newtonian)


Beautiful image Dan!!! 


On Thu, Nov 10, 2022 at 8:57 AM Dan_Paris <danysra@...> wrote:



NGC1961 is an interesting spiral galaxy in Camelopardalis approximately 200 million l.y. from us. Its very distorted shape is probably due to an interaction with another galaxy, although no companion galaxy has been observed. I chose the framing in order to include other interesting galaxies from the PGC catalog.

The image was taken is less than ideal conditions (Bortle 7 skies in Paris suburbs, gibbous moon for the luminance and  full moon for the chrominance, haze) but after two weeks of disastrous weather the telescope started gathering dust. I used as usual my 8" f/4 Newtonian astrograph on an AP900.

Link to the full-resolution image:

Clear skies,


Technical details

200/800 custom Newtonian astrograph with Romano Zen optics and carbon fiber tube
AP900 CP4 mount on Losmandy HD tripod
TS 2.5" Riccardi-Wynne corrector
ZWO LRGB filters
Guiding : ZWO OAG + ASI120mm mini + AsiairV1
Luminance : 220 *60sec with the ASI183mm
Chrominance : 75*60sec for each channel
Conditions : Bortle 7 skies in Paris' suburbs (20km from the Eiffel tower), average seeing, nearly full moon.
Processing with Pixinsight

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