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Heart - Ha - ASI1600_Pro First Light


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Acquired my ASI1600-Pro-Cooled three weeks ago and last night was the first time the clouds parted just enough to allow me to attempt first light. Sky conditions are less than ideal, Bortle 5, sky quality 19.93. Mel15 was at around 30 degrees above the horizon sitting in the LP from the city of Derby.

This is 10x60s + 10x120s + 8x180s (54 minutes) using the WO-ZS71+ASI1600MM all at unity gain, pre-processed and combined multi-session in APP, stretched in PI and tweaked in PS; there has been no noise reduction. The focus is not as good as I would have liked but I've had worse!

Mel15-1600-Ha.thumb.png.d0dab50487eb72947ace525197d05ade.png

I've also included my most recent Heart-Ha, 9x600s (90 minutes), taken with my Atik428ex + Samyang 135mm at f2, cropped for comparison.

Mel15_428-Ha.thumb.png.6b5e7f41010068774ca7263dc6fab0f9.png

Any advice on where to go from here with the 1600 would be really appreciated, e.g. different gain settings, different exposure times etc.

Thanks for looking.

Adrian

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26 minutes ago, Adreneline said:

Acquired my ASI1600-Pro-Cooled three weeks ago and last night was the first time the clouds parted just enough to allow me to attempt first light. Sky conditions are less than ideal, Bortle 5, sky quality 19.93. Mel15 was at around 30 degrees above the horizon sitting in the LP from the city of Derby.

This is 10x60s + 10x120s + 8x180s (54 minutes) using the WO-ZS71+ASI1600MM all at unity gain, pre-processed and combined multi-session in APP, stretched in PI and tweaked in PS; there has been no noise reduction. The focus is not as good as I would have liked but I've had worse!

Mel15-1600-Ha.thumb.png.d0dab50487eb72947ace525197d05ade.png

I've also included my most recent Heart-Ha, 9x600s (90 minutes), taken with my Atik428ex + Samyang 135mm at f2, cropped for comparison.

Mel15_428-Ha.thumb.png.6b5e7f41010068774ca7263dc6fab0f9.png

Any advice on where to go from here with the 1600 would be really appreciated, e.g. different gain settings, different exposure times etc.

Thanks for looking.

Adrian

You should get good results with 4mins exposures at unity gain.  Or go with gain 200 and 1 min....but that is more data than I can be bothered with. 

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5 hours ago, michael.h.f.wilkinson said:

Lovely result

Thank you Michael.

I've done a mega-zoom in on a group of stars which is quite illuminating!

The 1600: 1170298024_Screenshot2019-03-1815_45_30.png.3890271918d0d33e1a9adfefa5958f9b.png and 428 1782326361_Screenshot2019-03-1815_45_10.png.d57a4bf640c649b79348820e74762769.png

What a difference a few extra pixels make!

Thanks again.

Adrian

 

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On 18/03/2019 at 11:36, Adreneline said:

Acquired my ASI1600-Pro-Cooled three weeks ago and last night was the first time the clouds parted just enough to allow me to attempt first light. Sky conditions are less than ideal, Bortle 5, sky quality 19.93. Mel15 was at around 30 degrees above the horizon sitting in the LP from the city of Derby.

I got mine a couple of weeks ago, but I'm not allowed to open it until my birthday in a couple of weeks time. ?

I relocated to Malta just over a week ago, and where I am is also a Bortle 5, so the great images you've posted are encouraging (I've also got the narrow-band filter set).  Yesterday was sunny and the sky a very deep blue, rarely what you see in the UK.  I can't wait to get started!

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