|Location||La Palma / Spain|
|Object||Pinwheel Galaxy M101|
|Guiding||yes, QHY5-II Mono via OAG|
|Luminance||10x 600s, bin: 1x1|
|Red||8x 150s, bin: 2x2|
|Green||8x 150s, bin: 2x2|
|Blue||8x 150s, bin: 2x2|
End of February 2014 I already recorded M101 from Boeblingen near Stuttgart. The total exposure time was about 6 hours (!). This time I did a 2h40m exposure from Los Llanos de Aridane on La Plama with exactly the same equipment. This is the result. From my perspective the two pictures do not have a big difference despite the colour tone which of course depends on the post processing. However, it's interesting to compare the results with respect to their total exposure time: The image recorded from Boeblingen was exposed more than two times longer.
As a result of the long exposure time the stars are not as perfectly round as the ones with a shorter exposure time. Despite that I am happy to see what is still possible from a city like Boeblingen 🙂 Finally I combined both images to one final image by rotating one image until it matched exactly. Maybe I am wrong but I think in the end this combined image has a little more detail than each of the pictures alone. A full resolution image is available here.
Moon through GSO 200 mm f/5 (f=1000mm) with QHY5-II-M camera (without and with 2x barlow lens). Camera chip pixel size 3.75um x 3.75um, resolution 1280x960. Magnification=155 - 310
Jupiter through GSO 200 mm f/5 (f=1000mm) with QHY5-II-M camera (without and with 2x barlow lens). Camera chip pixel size 3.75um x 3.75um, resolution 1280x960. Magnification=155 - 310