Sergei Golyshev (AFK during workdays)
That was Venus passing by...
...the Moon.
That explains the idea of angular size and ambiguity of apparent magnitude :) But it doesn't explain, why StarWalk app messes with altitude readings... I don't believe this program anymore and I need a marine sextant.
And - I had just noticed this! - the Moon moves! Not only it moves "along with the sky" but it also moves by itself eastward. When there is such a nice reference as Venus it becomes obvious.
Aquisition time: JD 2456714.665556 (26.02.2014 07:58:24 MSK)
Image orientation: straight.
Equipment:
Canon EOS 60D (unmodded) with Canon EF 70-200 mm f/2.8L IS USM lens and EF 2x III extender mounted on photo-tripod via Manfrotto 410 Junior geared head.
Aperture (effective) 50 mm
Focal length 400 mm
Tv = 1/200 seconds
Av = f/8
ISO 400
Exposures: 23
Processing: RAWs were dimmed down 0,5 EV, pre-cropped to about 1700x1700 pix and exported as 8 bit .TIFFs. Output was assembled into .AVI movie and fed to AutoStakkert!2. Stacked image was subjected to Richardson-Lucy deconvolution (Gaussian type PSF, 0,6 units, 7 iteration) and tweaked in Photoshop.
That was Venus passing by...
...the Moon.
That explains the idea of angular size and ambiguity of apparent magnitude :) But it doesn't explain, why StarWalk app messes with altitude readings... I don't believe this program anymore and I need a marine sextant.
And - I had just noticed this! - the Moon moves! Not only it moves "along with the sky" but it also moves by itself eastward. When there is such a nice reference as Venus it becomes obvious.
Aquisition time: JD 2456714.665556 (26.02.2014 07:58:24 MSK)
Image orientation: straight.
Equipment:
Canon EOS 60D (unmodded) with Canon EF 70-200 mm f/2.8L IS USM lens and EF 2x III extender mounted on photo-tripod via Manfrotto 410 Junior geared head.
Aperture (effective) 50 mm
Focal length 400 mm
Tv = 1/200 seconds
Av = f/8
ISO 400
Exposures: 23
Processing: RAWs were dimmed down 0,5 EV, pre-cropped to about 1700x1700 pix and exported as 8 bit .TIFFs. Output was assembled into .AVI movie and fed to AutoStakkert!2. Stacked image was subjected to Richardson-Lucy deconvolution (Gaussian type PSF, 0,6 units, 7 iteration) and tweaked in Photoshop.