97% waxing moon, mosaics, #25 red & IR cut filters
Posted: Sat Feb 27, 2021 3:21 pm
Captured 25th Feb 2020 around 19:30 - 20:30. Moon 97% illuminated, elevation around 50°. 1 hour of imaging gathered ~88gb of data. Celestron AVX mount, Celestron C8 SCT, Altair 183M camera & Skyris 618m camera. Processing with Autostakkert!3 (best 5% of frames stacked) & GIMP mosaics stitched with Microsoft Image Composite Editor. Information from Virtual Moon Atlas.
To counter the brightness a Wratten #25 red filter and IR Cut filter were used together.
Altair 183M, each panel 1920x1200, MONO8, gain 400/4999, 2,000 frames @35fps. Mosiac annotated for interest.
Skyris 618m, each panel 640x480, MONO16, gain 303/1000, 7200 frames @ 120fps.
Skyris 618m, 640x480, MONO16, gain 303/1000, 7200 frames @ 120fps. Pythagoras is the the crater at the centre of the rim.
Skyris 618m, 640x480, MONO16, gain 303/1000, 7200 frames @ 120fps. Rimae Darwin - the fissure can be seen from the centre of the image travelling downwards.
A note on histograms. For a lunar image with some black the histogram will look like this - classic 'whale' shape with right hand side around 60%.
For a full surface lunar image the histogram will look like this - a 'hump' with a gap at the left hand side, the right hand side being around 60%.
Dave
To counter the brightness a Wratten #25 red filter and IR Cut filter were used together.
Altair 183M, each panel 1920x1200, MONO8, gain 400/4999, 2,000 frames @35fps. Mosiac annotated for interest.
Skyris 618m, each panel 640x480, MONO16, gain 303/1000, 7200 frames @ 120fps.
Skyris 618m, 640x480, MONO16, gain 303/1000, 7200 frames @ 120fps. Pythagoras is the the crater at the centre of the rim.
Skyris 618m, 640x480, MONO16, gain 303/1000, 7200 frames @ 120fps. Rimae Darwin - the fissure can be seen from the centre of the image travelling downwards.
A note on histograms. For a lunar image with some black the histogram will look like this - classic 'whale' shape with right hand side around 60%.
For a full surface lunar image the histogram will look like this - a 'hump' with a gap at the left hand side, the right hand side being around 60%.
Dave