6 replies to this topic

[sharkmelley]

I bought a Canon EOS R full frame mirrorless camera and here is the first light, taken a few nights ago:

 

 

Full size version can be found on Astrobin: https://www.astrobin.com/6d7ppo/

Unfortunately it is a bit out of focus because I was concentrating far more on the camera than on the telescope!  I also need to readjust the tilt of the adaptor.

 

Buying a Canon EOS R full frame mirrorless camera is one last throw of the dice after using both a Sony A7S and a Nikon Z6 with all their inherent problems.

 

Acquisition details are the following:

• Unmodified Canon EOS R on Takahashi Epsilon 180ED
• 60 x 2min dithered exposures at ISO 1600
• Sky quality reading averaged 20.85 but transparency was variable

Natural colour processing in PixInsight with the following main steps:

• Calibration with darks, flats, bias
• CFA drizzle stacking with a scale of 2
• Noise reduction followed by 2x2 binning back to original size
• White balance, AdobeRGB colour correction matrix, BackgroundNeutralisation, ArcsinhStretch
• Apply gamma of 2.2 for AdobeRGB colour space then convert to sRGB

Obviously I will be putting this camera through some extreme testing before I decide either to modify it or sell it but so far it is looking very performant.

 

My next image will be a far more demanding target - the dust clouds in the region of the Iris Nebula.

 

Mark

Edited by sharkmelley, 06 September 2021 - 02:28 PM.

[F.Meiresonne]

Quite nice.

 

I like the blue/red outcome. 

[Aquat0ne]

Nice one.

Are planning to go down the path of an dedicated astro camera if the Canon doesn't suit your needs?

[sharkmelley]

Are planning to go down the path of an dedicated astro camera if the Canon doesn't suit your needs?

It's possible but a dedicated astro-camera with a full-size sensor is relatively expensive and far less flexible to use.

 

I'm doing a large number of tests on the EOS R and I'll do a full review of my findings in due course.

 

One early discovery is that the thermal noise and the camera self-heating on the EOS R is remarkably low:

https://www.cloudyni...rks/?p=11331625

 

Mark

[SandyHouTex]

I bought a Canon EOS R full frame mirrorless camera and here is the first light, taken a few nights ago:

 

ngc7000_20210902_srgb_small.jpg

 

Full size version can be found on Astrobin: https://www.astrobin.com/6d7ppo/

Unfortunately it is a bit out of focus because I was concentrating far more on the camera than on the telescope!  I also need to readjust the tilt of the adaptor.

 

Buying a Canon EOS R full frame mirrorless camera is one last throw of the dice after using both a Sony A7S and a Nikon Z6 with all their inherent problems.

 

Acquisition details are the following:

• Unmodified Canon EOS R on Takahashi Epsilon 180ED
• 60 x 2min dithered exposures at ISO 1600
• Sky quality reading averaged 20.85 but transparency was variable

Natural colour processing in PixInsight with the following main steps:

• Calibration with darks, flats, bias
• CFA drizzle stacking with a scale of 2
• Noise reduction followed by 2x2 binning back to original size
• White balance, AdobeRGB colour correction matrix, BackgroundNeutralisation, ArcsinhStretch
• Apply gamma of 2.2 for AdobeRGB colour space then convert to sRGB

Obviously I will be putting this camera through some extreme testing before I decide either to modify it or sell it but so far it is looking very performant.

 

My next image will be a far more demanding target - the dust clouds in the region of the Iris Nebula.

 

Mark

That’s a great pic Mark.  Lots of Ha.

[sharkmelley]

That’s a great pic Mark.  Lots of Ha.

Thanks. 

The Ha response of the EOS R is less than the Nikon Z6 but in practice I don't think anyone would notice.

 

Mark

[polare70]

Nice foto!