I wasn't planning on shooting this conjunction, but when my main target shifted below the trees earlier than I was expecting, I switched over and decided to try to get the Mars/M45 conjunction last Friday. I shot 20 30-second frames for the planet, and then finished with 72 120-second frames for the background with my modded Canon 600D, iEXOS-100 mount, and Rokinon 135mm f/2 lens stopped down to f/2.4. I haven't had much success with an aperture mask with this lens, and find the even diffraction spikes from the aperture blades to be more pleasing. But those spikes are so sharp - you can cut your eyes on them.
Mars had drifted enough to be a bit of a smudge in the 120-second stack, so I just used the data from the 30-second subs for the planet. Calibrated in APP with 30 each darks, flats, and dark flats, and then stars removed from the background with Starnet++. I did clone-stamp Mars out of the 120-second background frames, and then composited it from a stack registered to the position of the first 30-second sub. Then stars reduced a bit in Nebulosity4, and recombined in GIMP.
I think I made a bit of a mess of M45 with the 120-second subs, but I really like highlighting the dust in the background.
C&C welcome and appreciated!
Full resolution: https://www.astrobin...mv3c4e/?nc=user