Lunar

Re-processing Moon image in Registax

Roger has very kindly reprocessed my recent Moon image in Registax for me.

He comments: “I actually usually find “wavelets” in Registax more useful for sharpening, at least initially.”

QHY10 camera, Sky Watcher Equinox Pro 80mm OTA, TS OAG/flip mirror, Lichfield, August 2019, Andrew Thornett/extra processing by Roger Samworth.

Andy

This post follows on from my previous post:

Applying Lucy-Richardson sharpening in GIMP to my previous Moon image

My original Moon image:

Roger’s reprocessed image in Registax:

Settings Roger used on Registax:

Applying Lucy-Richardson sharpening in GIMP to my previous Moon image

Had a go at applying small amount of Lucy-Richardson sharpening in GIMP (in G’Mic plug-in) to my previous lunar image – let me know if you think it is an improvement or not…..

[How to find this filter: After installing G’Mic plug-in into GIMP, click on “Filters” in GIMP. GMIC should appear at the bottom of the drop-down list. Click on that.]

Andy

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

 

Fun with my Bridge Camera

Some pics taken this evening with my Nikon P520, when I went out ‘bat hunting’ (NB all these images are cropped!):

Saturn single frame!
Jupiter Single Frame
Jupiter Single Frame – you can just see two bands!
Jupiter and Saturn
20 Jupiters and 30 Saturn images stacked out of 40 each, drizzled x3 to make them big enough to see!.
Sturgeon Moon Colour
And the Sturgeon Moon in Colour, stack of 10 frames.

Moon 25/07/2019

Perhaps unsurprisingly, I coudn’t sleep last night, so looking out of the window, I could see almost an exact last quarter moon. It would seem then that one of my favourite targets, Rupes recta, or the Straight wall might be ideally lit in the (lunar) setting sun for a change.

 

And so it was! A couple of the details deserved a closer examination:

Dome Birt 1 was quite obvious on the detail image of the Straight wall.

It was also interesting to compare images of the Wall under rising and setting sun conditions.

I acquired the rising sun image a couple of years ago under similar (ie window-sill) conditions.

A little north of the Wall is the crater Lalande, and do I see a second “Lunar X”?!