Lunar reprocessed, with blind deconvolution

[turfpit]

Data captured between May 2019 and May 2022 using versions of SharpCap from 3.2 to 4.0. The workflow was - stack in Autostakkert!4 and apply blind deconvolution (PSF from ROI or Tiles) using BiggSky. No further post processing was carried out - technical details after the images. A couple of images (with stitch in the name) are 2 panel mosaics built with Microsoft Image Composite Editor. Even Hadley Rille managed to sneak in on one of these images.

06_46_43_pipp_lapl3_ap351_Drizzle15_Decon_View_16b.jpg (727.85 KiB) Viewed 522 times

21_30_00_lapl3_ap132_Drizzle15_Decon_Tiled_View_16b_stitch.jpg (766.15 KiB) Viewed 522 times

21_32_00_lapl3_ap158_Drizzle15_Decon_Tiled_View_16b.jpg (141.17 KiB) Viewed 522 times

21_34_15_lapl3_ap155_Drizzle15_Decon_Tiled_View_16b_stitch.jpg (451.67 KiB) Viewed 522 times

22_04_18_lapl3_ap287_Drizzle15_Decon_Tiled_View_16b.jpg (497.55 KiB) Viewed 522 times

23_32_00_lapl3_ap316_Drizzle15_Decon_Tiled_View_16b.jpg (665.86 KiB) Viewed 522 times

23_44_47_lapl3_ap487_Drizzle15_Decon_Tiled_View_16b.jpg (634.05 KiB) Viewed 522 times

23_50_40_lapl3_ap425_Drizzle15_Decon_Tiled_View_16b.jpg (532.76 KiB) Viewed 522 times

23_54_41_lapl3_ap312_Drizzle15_Decon_Tiled_View_16b.jpg (485.28 KiB) Viewed 522 times

Schickard-Phocylides-Schiller.jpg (119.75 KiB) Viewed 522 times

Equipment: Celestron C8 SCT, Celestron CG5 or AVX mount, QHY5LII-M (3.75µm pixels ) camera, IR685 pass filter.
Software: SharpCap 3.2 - 4.0, Autostakkert!4, BiggSky, MS ICE.
Capture: SER (500, 2,000, 10,000 frames), MONO8, 1280x960, exposures 10 - 15ms.
Processing: Autostakkert stack 50 - 85% of frames with drizzle15. BiggSky using render=clip (gamma 1.5), tiles 500/50, denoise 0,1, crop. Images are straight out of BiggSky with no other post processing carried out except for mosaic stitching with MS ICE.

Tile size for lunar images can be calculated using the formula:

Tile Size = Focal Length (mm) / Camera Pixel Size (µm) * Barlow Mag

For my equipment - C8 focal length = 2032mm, pixel size = 3.75µm, barlow mag = 1 (no Barlow or reducer in optical train)

gives 2032/3.75*1 = 541.

Prior to acquiring the formula from David Biggs, I used tile size = 500 with overlap = 50 (10% of tile size). I suppose a test with 550 is in order to see if there are any differences. The tile size of 500 was obtained via a more convoluted (no pun intended) sequence of calculations.

My recent early May lunar sessions saw me acquire ~0.5Tb of data. With the software used here I can see my way to automating the (tedious) bulk processing of lunar data and, as an added benefit, reliably obtain consistent results.

Virtual Moon Atlas can be used to identify the lunar features.

Dave

[Leandro Salgueiro]

Dave

Excellent work, makes me want to keep getting closer and touch the lunar surface. The details obtained are incredible

Congratulations
Leandro

[turfpit]

Thanks Leandro. I am quite pleased with the detail revealed by what is quite modest equipment.

Dave