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knobby

M51 Whirlpool galaxy

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First attempt at any DSO other than the brighter stuff like M42 or Andromeda.

Learning to use the AZ-Gti /Sharpcap polar align / windows synscan app / APT platesolving ... And guiding ! all in one night ?

all went well so had a quick 30 mins on M51 (first time I'd ever managed to actually frame it ... Plate solving is amazing)

90 second subs gain 420 and 5 darks and synthetic flat for dust bunnies / gradients

Wish I'd have gone longer now as tried a 5 minute sub once guiding was working which looked good .

Very noisy but only 30 mins .

M51 28-3-19 35 mins.png

Edited by knobby
Added info re synthetic flat
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Thanks Bobby, it's a SW ED72 and Altair 183C non Tec also a William optics 0.8 reducer.

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Nice catch.

I know the feeling of kicking yourself when you realize you could've done so much better, but it's too late to start a new series of photos. Well, now you know :) .

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Getting it all working together was the aim so the M51 was a bonus ?

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On 29/03/2019 at 10:56, knobby said:

First attempt at any DSO other than the brighter stuff like M42 or Andromeda.

Learning to use the AZ-Gti /Sharpcap polar align / windows synscan app / APT platesolving ... And guiding ! all in one night ?

all went well so had a quick 30 mins on M51 (first time I'd ever managed to actually frame it ... Plate solving is amazing)

90 second subs gain 420 and 5 darks and synthetic flat for dust bunnies / gradients

Wish I'd have gone longer now as tried a 5 minute sub once guiding was working which looked good .

Very noisy but only 30 mins .

M51 28-3-19 35 mins.png

Nice first try! Did you use dark, Bias and flat frames?

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Just 5 darks as the temperature was changing so didn't bother any further.

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