North America and Pelican - multi 30 sec exposures

Started 4 months ago | Discussions
Tristimulus Veteran Member • Posts: 8,859
North America and Pelican - multi 30 sec exposures
5

Got the opportunity to image the North America nebula and the Pelican nebula with my little astrograph and a thermoelectrically cooled camera.

106/530-5 astrograph. 64x30 sec stacked exposures, no flats, no darks and no bias.

A low hanging 90 % illuminated moon. Stars down to 19th magnitude.

NGC 7000 North America nebula. 64x30 sec stacked exposure.

IC 5070 Pelican nebula. 64x30 sec stacked exposure.

danny006 Senior Member • Posts: 1,414
Re: North America and Pelican - multi 30 sec exposures

Looking good. Is it possible the red is a little off?

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Sony a6400 Sony E 16-50mm F3.5-5.6 PZ OSS Sony 1.4x Teleconverter (2016) Sony FE 200-600 F5.6-6.3
andresch Forum Member • Posts: 99
Re: North America and Pelican - multi 30 sec exposures

A beautiful view with lots of stars. I like it! Do you plan to combine the shots? Would be a fine mosaic i guess. One of the new BSI Sony sensors? Incredible image quality for such short exposures without calibration frames!

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Nikon D5500 Olympus OM-D E-M10 II
OP Tristimulus Veteran Member • Posts: 8,859
Re: North America and Pelican - multi 30 sec exposures

danny006 wrote:

Looking good. Is it possible the red is a little off?

Appreciate comments like this one!

Yes - if going for the color palette most commonly used.

Am searching for a somawhat softer and not so over saturated color palette. Do not like over processed images (personal opinion). Have a way to go before settling for a personally pleasing color palette.

OP Tristimulus Veteran Member • Posts: 8,859
Re: North America and Pelican - multi 30 sec exposures

andresch wrote:

A beautiful view with lots of stars. I like it!

Thank you!

Do you plan to combine the shots? Would be a fine mosaic i guess.

Have the software so thank you for the idea. Am into panoramas for my ordinary photography but have not tried that for my astrophotos. Time to try I guess...

One of the new BSI Sony sensors? Incredible image quality for such short exposures without calibration frames!

ZWO camera and Sony APS-C BSI Sony sensor.

The images was taken at zero degrees centigrade and there are three hot pixels at that temperature and that's it. At -20 C the image sensor is incredibly clean.

Actually calibration frames seems to degrade the image quality (the standard using bias, dark and flat calibration frames worked fine for my old CCD camera but not so for the CMOS image sensor).

CCD cameras do basically have fixed pattern noise and CMOS image sendors have random shoot noise - so applying the same calibration process seems a bit odd - at least to me.

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