Grainy M51 Short Shot

This is M51 and NGC5195. It’s grainy because it’s only 8 shots. 75 second exposures at ISO 800 through the William Optics z61 so 360mm, f/5.

I’ve cropped it to be similar in size to a shot i did through the takumar lens around this time last year. The Takumar shot (below) is a single exposure because i hadn’t discovered siril yet.

Bode’s Galaxy and Friends

Bode’s is the spiral near the center, to the left is NGC 3034 the Cigar Galaxy. Above to the right is NGC 2976 and below near the triplet is NGC 3077.

This is 45 exposures of 75 seconds each at ISO 800 with my canon t3i and william optics Z61(360/f5). They were stacked and colour calibrated with Siril, autostretched and the black point raised with the asinh processor.

It’s dramatically better than last time i tried this but I still find the images a bit grainy.

It’s kind of Soulless

This is the Soul Nebula, IC 1848. A solid hour of exposure in 60 1 minute chunks ISO 800 through the Z61 telescope(360mm f/5) with the Canon t3i. There’s just a suggestion of the nebulosity in the middle. It seems like I would need several hours to get anything much more visible.

M33 – Triangulum

Below Andromeda is the smaller Triangulum Galaxy M33. This is 20 exposures of 100 seconds at 800 ISO through the Z61 so 360mm f/5 with calibration frames from other nights. It’s not great but better than my previous effort.

Not Completely Heartless

This is fifteen exposures of 60 seconds at ISO 800 with the canon t3i through the Z61(360mm f/5.9) with darks, biases, and flats. You can just see a hint of the nebula with more in red near the top a bit left of centre. I found a better image taken with a similar setup but 120 second at ISO 1600 so much more light. He must have been in a darker spot. I can certainly take more exposures but i don’t think i can up the time or ISO much.

Note to me: I used the Photometric Color Calibration on this which was quick and easy.

M31 – M-Thirty-Wonderful

Pretty much the perfect target for my setup, the Andromeda Galaxy almost fills the field. This is 30X75 second shots at ISO 800 through the Z61(360mm f/5.9). Postprocessed in Siril. At full view the stars are a bit elongated top to bottom but I’m pretty pleased.