74 % waxing gibbous Moon on Jan 1st 2023 (Tommi R)

74 % waxing gibbous Moon on Jan 1st 2023

Acquisition type: Lucky imaging

This is the first try on the Moon with my cheap Bresser MC-127 MAK (1900 mm F/15) with ASI183mm. The image scale is really pushing it (2.4 micro meter pixels with an F/15 scope) regarding the atmospheric conditions here in Finland, but this is what I have now... The image is scaled down to 75 % of the original (still 5392 x 5372 pixels) and is a composite of 8 images (I could have probably covered the Moon with 3-4 images but ended up recording more so I used them all).

I took data with ProPlanet 642 IR bandpass and with a green Baader CCD filter. The IR data was vastly superior to the green filter which is really not a surprise.

I wanted to have a grab & go lunar and planetary setup so I used the small mak with my SW az-gti. The size is indeed very handy but I am not convinced with the image quality (might be atmosphere, might be image scale, might be collimation - which doesn't look that bad but there might be some fine tuning potential). I am still thinking about a 100 mm fpl-53 doublet as an alternative - az-gti does not really take any larger refractor.

I used Firecapture, gain 180 (40 %) and 7 ms exposure time and .ser capture. The Moon was about 41 degrees above horizon during imaging.

Original
Final
B

B

Title: Fixed processing showing what a 127/1900 mak can do

Description: I found some issues in the processing of the original version (rev A) - all thanks to too many cloudy nights as I did not have anything new to process. So I think this is pretty much all I can get imaging wise with my grab & go setup (a Bresser 127/1900 mak on a SkyWatcher AZ-GTI with ASI183mm). There might be better result if I could use a red filter or even a green filter but this is Finland so Astronomik 642 IR band-pass it typically is. However, I feel like I am going to use this scope for some time as this seems to tick the right boxes in my usage case.

This is 100 % uncropped / downscaled image. Mosaic of 5 subframes to get all of the Moon in the picture.

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