Williams Zenithstar 110 mm F 7.0 apochromat (TMB -designed lens) - reduced to F5.5 using a WO III reducer flattener, Moonlite focuser and focus controller, Ioptron CEM70G mount, 80 mm f = 400 mm guide scope with ZWO ASI 120MM camera, ZWO AI294 MC main camera. Optical train locked using a Baader clicklock
370 x 66s frames at unity gain captured in Sharpcap, PHD2 guiding, 1.545 arcsec/ pixel. Processing in PixInsight- 2X Drizzle CFA, Multiscale (MARS data) background subtraction, RCD Blur Exterminator star reduction- SPCC colour calibration, multiscale adaptive stretch, exponential and arcsinh adjustment and RC Noise Exterminator noise reduction.
One (rare) clear, moonless and reasonably still night on 09-10/10/26 at ~ Bortle6.
Yet another image of M31 but I was quite pleased with it since it demonstrated that simply fitting a Baader clicklock completely fixed an apparent 'tilt' problem previously encountered using this telescope - meaning that I am now really getting the best out of this more than 20 year old but still good quality telescope. Secondly the use of the PI - MARS project background subtraction seems to have resulted in a relatively deep image that is just as good or better than one previously obtained from an ~ B4 site.
M31 110 mm refractor
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Please upload large images to photo sharing sites (flickr, etc) rather than trying to upload them as forum attachments.
Please share the equipment used and if possible camera settings to help others.
Please upload large images to photo sharing sites (flickr, etc) rather than trying to upload them as forum attachments.
Please share the equipment used and if possible camera settings to help others.
Link to high res version. M31 110 mm refractor
the colours seemed to go wrong when the .jpg was reduced down a long way.
https://www.flickr.com/photos/204508644 ... ed-public/
https://www.flickr.com/photos/204508644 ... ed-public/