Observation by Nick James: Deep and wide image of M57

Uploaded by

Nick James

Observer

Nick James

Observed

2023 Jun 16 - 00:46

Uploaded

2023 Jun 16 - 05:48

Objects

The Ring Nebula (M57)

Equipment

ASI6200MM + Celestron HD11

Exposure

32x60s

Location

Chelmsford, UK

Target name

M57

Title

Deep and wide image of M57

About this image

This is a full-frame image of M57 taken using an CMOS IMX455 sensor and a 0.28-m Celestron Edge HD. This image is actually binned 4x4 from the native sensor resolution to upload here but the 2x2 binned version is around 15 Mpix. The star FWHM is 2.3 arcsec and the LM of this stack is around 20. Given how bright the sky was I was pleased to see that it picks up the faint outer nebulosity of M57.

Files associated with this observation

m57_20230616_004613_ndj.jpg (1.8 MB)

Like this image

Callum Potter, Andy Wilson, Simon Paul Davis, Mike Harlow, Dr Paul Leyland, Peter Carson

Comments

Mike Harlow, 2023 Jun 17 - 10:44 UTC

Very nice image given that it's summer and it doesn't get astronomically dark here.

Just a comment on the recent Forum discussion about CCD vs CMOS. I note that the Telescope Live remote telescope network have swapped out all their CCD imagers for CMOS cameras (QHY600's).

Dr Paul Leyland, 2023 Jun 17 - 12:02 UTC

Also includes one of my favourite barred spiral galaxies. An edge-on spiral completes the line of three DSOs.

Nick James

Nick James, 2023 Jun 17 - 23:25 UTC

Mike - Yes, having used a large CMOS sensor I would not want to go back to CCDs. CMOS has a huge number of advantages over CCD in pretty much every area. My old KAF-6303E camera was very nice but it was very noisy compared to the IMX455 and it had really bad RBI at low temperatures. The fact that CMOS can give you high frame rate video makes focussing a doddle too. I switched to CCD in the mid nineties and went from 35mm hypered TP2415 to a sensor a few mm across but with brilliant QE. I now have finally got back to full frame.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.

Registered charity no. 210769
Registered company no. 117572

For more information including contact details, click here.

Our Terms of Use are here.

Our Privacy Policy is here.