hha

This is a fantastic image, a smidgen inside of optimum focus. With my Nikkor 85mm manual focus lens I focus at f/1.8 using LV on a bright star (Vega in this part of the sky) while viewing at ...

Great. I will test it as soon as you make it available. hha

The new software works very well and is a lot faster than IRIS. Bad pixels create "walking noise" when the images are registered on the stars. IRIS has a bad pixel list, which replaces bad pixels ...

Why do you think 200 mm is too short for the eclipse? hha

Depends on which side of Oregon. On the HW in the eastern side there may be lots of crowds with camper trucks along the HW, but there are lots of 4x4 logging roads to get away from the crowds. hha

For 24 Mp APC format 250/f is a better rule. For AP make sure that you don't set the iso too high or the exposure to long. The peak of the histogram should should be 30% of FS or less. The ...

Powerful stuff based on visiting their web site. Their free trial version claims to be fully functional (except saving is disabled). Let us now how it works for you. I use IRIS, which has a steep ...

Totality is only 2 minutes. Is this the time from first contact to last contact? If the pole axis is misaligned in azimuth by theta degrees from true north, then a star at declination DEC will ...

W5JCK wrote: I took pictures of this area on Sunday night 20160821 from Mt.Pinos at 8:30 PDST with a 50mm f/1.8 stopped down to f/2.8 Nikon D3300 iso1600 9x5sec=45 sec compared to your Sony iso3200 ...

There is something odd about the DX image. The bright star at the center has diffraction spikes indicative of a stopped down aperture. Stopped down from f/2.  Possible? hha

I use measurements of the x and y  shift between a sequence of exposures to estimate polar misalignment. Sequator measures both numbers. Could the x and y shift in pixel units be written to a ...

Nice. Big improvement over 0.9 from last year. Much faster than IRIS. Does the stacking in use a liner shift and rotation or linear shift only? In the "complex" mode do you do some quadratic ...

Interesting question. According to your gear list you already have both and the D300. Try them all centered on Polaris with a 10 second shot at iso1600.  Post the results. hha

Bjorn: Interesting topic, but .... How were you able tell that the D700 is about a factor of three less sensitive than the D750 or D800/810?  Did you need much less time to reach the same signal ...

I download the jpeg and removed the background using IRIS. D750 iso800 30sec 35mm f/1.4 JPEG processed using IRIS One has to zoom in at 100% to appreciate the image quality. I find the CA around ...

As other have already said, from a good site you should be able do very well with what you already have. 20 sec with your 14mm f/2.8 lens at iso1600 should produce very good results from a good ...

Milky Way Dude wrote: Is the field of view on my RX100 also typical of lens used with bigger sensor cameras in AP? I would like to learn to frame scenes in my photos, which I haven't tried yet. Gre ...

Nice composition. You did not miss much. On the second picture a little more of the teapot (Sagitarius) on the far left side. 16mm on APC format is excellent. It gives a 74 deggree wide field of ...

Excellent detective work. I have the Rokinon version of this lens. Its optical performance on stars at f/2.8 in the APC format is impressive. The focus at infinity (based on stars) was right on.  ...

The best test of your lens is a star field (center on Big dipper is best) using the same exposure duration as what you plan to use for your Milky Way picture, but no longer than 100/focal length ...