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First shot of Milkyway. Advice appreciated.

Started Oct 26, 2016 | Questions thread
Astrophotographer 10 Forum Pro • Posts: 13,911
Re: First shot of Milkyway. Advice appreciated.
1

oscarvdvelde wrote:

Astrophotographer 10 wrote:

Use ISO6400. Shoot in RAW if you didn't already. LENR on.

The 2 streaks are meteors. They are quite common at a dark site. In a light polluted area you only see the very brightest ones but at a dark site you see the more minor ones and they happen quite frequently.

Greg.

Are you giving sarcastic advice now? Why ISO 6400? His shot is bright enough and it would only blow out bright stars and add noise. LENR takes out stuck pixels, but you can better take a dark frame (lens cap on) and subtract that if necessary.

Second, the streaks are straight without fade in/out, a tell-tale sign of satellites. The chances are much higher for satellites than meteors of this brightness at f/2.8! They move slower and expose pixels more effectively.

The shot should be taken raw and as a starting point for editing, fix the white balance at daylight/sunny and then use RGB curves to balance the color. Less noise can only be had by using brighter apertures or by stacking (look for Sequator - it works even if a tracker was not used)

What?? No I am being serious  ISO6400 is my usual ISO for short exposures. If I do longer exposures I bring the ISO down. Noise is still not much of a factor at ISO6400 and no you will not blow out the stars in 20 seconds ISO6400. LENR gets rid of most of the noise. Yes you can do a dark (same exposure and leave the lens cap on then set it to subtract blend mode in PS as a layer with the light image).

XT2 30 seconds  ISO6400 F2.8 16-55 at 16mm 9 images stitched

As you can see I practice what I preach!

But you may be considering doing that in a light polluted area in which case you are right ISO6400 will be no good as the skyglow will saturate the image too quickly.

I only looked at the posted image at a small scale and yes you're right its probably a jet or a satellite. Probably a jet as a satellite usually shows up in telescope images not wide lens images. Meteors fade out.

Greg.

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