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First M-1 Attempt

astrophotography beginner dslr
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#1 Blackbelt76

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Posted 14 January 2020 - 10:32 PM

Would enjoy hearing from those with far more experience than myself what my next steps should be

or how I could improve this with the equip I'm using?

 

I'll eventually get into auto guiding, plate solving etc, though not til late spring

 

I've been unable to visually see M-1 thru my 9.25 Celestron; no doubt due to sky glow to my east.

Curious, I went out tonight, did a polar scope only alignment  to see if I could capture it.

 

I was pleased to say the least for my first attempt.

Focusing was difficult, but did the best I could using live view magnified and manually focusing.

 

Equip:

 

Nikon D300s APS-C, Un-moded

200mm f/2.8..Image shot at f/4, 90 secs unguided x10

No Flats used, only Lights, Darks and Bias.

Mount: Skywatcher EQ6R.

 

DSS to register and stack.

 

My post was all done in Adobe, though I know I have a long way to go here.

Primarily adjusted Levels, RGB curves, Noise reduction, Blend layer mask for hue/sat, unsharp mask.

I'm scaling the final image to increase it's size, though not sure if this is the best way?

Attached Thumbnails

  • Crab-1.jpg
  • Crab-2.jpg

Edited by Blackbelt76, 14 January 2020 - 10:39 PM.

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#2 Gipht

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Posted 14 January 2020 - 10:54 PM

There does not seem to be any color in the posted picture?    Maybe  something happened in the posting process?

 

Focus is one key in getting a better picture.  They do make Bahtinov masks for camera lenses.

 

M1 is a challenging target,  especially at a 200mm focal length.   M31, M42, or M45  are available this time of year and would be an easier place to start.


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#3 Blackbelt76

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Posted 14 January 2020 - 11:01 PM

There does not seem to be any color in the posted picture?    Maybe  something happened in the posting process?

 

Focus is one key in getting a better picture.  They do make Bahtinov masks for camera lenses.

 

M1 is a challenging target,  especially at a 200mm focal length.   M31, M42, or M45  are available this time of year and would be an easier place to start.

True; I didn't see any color in the original NEF image.

I don't know if I can capture color w/o a filter and un-moded DSLR?

Manually focusing a 200mm away from "so called" infinity is tricky.

My focus may have slipped during the evening; I probably should have placed a piece of tape on the focus ring. :)


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#4 Gipht

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Posted 14 January 2020 - 11:17 PM

The stars should have some color with your camera even unmodified and without a filter.   Maybe try adding more color saturation?

 

Manually focusing a camera lens is tricky, and the correct focus can change as temperatures drop.  Sometimes the seeing is poor too, and that can  cause a blur.  The wider field looks fairly good focus wise.


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