Taking my first successful focused photo of a celestial object with QHY10 camera and Sky Watcher Equinox Pro 80mm/TS OAG-flip mirror – photographing full moon 16/8/19

Having successfully obtained focus with the QHY10/Equinox 80/TS OAG-flip mirror, I was then able to also obtain my first “proper” image of a celestial object using the QHY10 camera.

Successfully achieving focus & noting the focal point on Sky Watcher Equinox Pro 80mm OTA on Manfrotto mount with QHY10 camera and TS off axis guider/flip mirror 15/8/2019

The extensive cloud cover meant that the only object available was the full Moon which was able to penetrate the clouds. To photograph this, I had to use the lowest shutter speed setting possible of 1/10000 second and also using an aperture mask to reduce the aperture of the Equinox 80mm OTA by about 70% and the clouds further reduced the brightness of the Moon!! I don’t think the QHY10 was designed with the brightness of the Moon in mind. Settings on Nebulosity were also amp off on the QHY10, gain 0, offset 130.

Focus point = 15.5mm on the scale on the Equinox 80mm for the QHY10 with the TS OAG/Flip mirror also in place.

The following screenshot shows the focused Moon in Nebulosity 4 software, together with settings for the QHY10 on that software used tonight – note that there is colour dispersion due I suspect to low altitude of Moon and cloud present:

I found a process to address the colour dispersion using GIMP2 software using the decompose function which I have described in another post (click on link below) – please could readers let me know of any better process that you are aware of that I could have used tonight. I do have an atmospheric dispersion corrector but it is only 1.25″ fitting rather than the 2″ fitting required for the QHY10 camera.

Decomposing images in GIMP2

This resulted in my successful image of the Moon:

Moon-150819VII-15-5mm-on-Eq80-focus-tube-RGB-red-layer-after-decompose:

Moon 150819(VII) 15-5mm on Eq80 focus tube-RGB-blue layer after decompose:

Blue frame above with some processing in GIMP2 (single frame):

See following post for further processing of this image:

Re-processing Moon image in GIMP

 

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