About 1.5 months ago I was offered the opportunity to test the soon to be released ZWO ASI 294 MM Pro. This is a monochrome version of the well known 294 MC camera. I was particularly interested in this sensor because I was one of the early adopters of the MC version which was a perfect match to a telescope that I owned at the time.
The camera showed up just in time for the August new moon which coincided with a long stretch of clear weather, a rarity in the PNW. Given that the body and back focus are the same as other ZWO cameras that I own i.e. the 1600 and the 183, I was all set from the get go to use the 294. I didn't waste any time and put it to good use the same evening on the day it came.
After using the sensor for a few imaging sessions I keep being impressed by what it can do. Paired with fast optics it can gather light at incredible pace and produce respectable results even during just one late summer night of imaging. The calibration woes present in the color version did not make their way to the mono version. In fact the calibration is very straightforward and everything works as expected. The sensor is also very clean. I still recommend to dither which is good practice with all sensors, especially CMOS.
I didn't spend any time characterizing the sensor as it's been well documented through the years and the numbers have already been dissected every which way one can think of. Instead I was more interested in image quality.
For the imaging runs I picked objects with faint nebulosity that one might even consider difficult targets to render in a proper way. In addition to that I shot a couple of NB objects from my house in Central Seattle.
The official announcement will come from ZWO Shortly but I was authorized to share the images. So without further ado here they are. The details are in the Flickr descriptions.
I will be happy to field any questions regarding the images. At this point I have no release date or pricing details.
Just a heads up, the image of VDB152 shows bad collimation on one side - my mistake, apologies. I forgot to rotate the focuser to the angle that I had collimated the scope for.
Edited by andysea, 02 September 2020 - 03:08 PM.