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DSLR imaging: Sunspot AR2786,
Moon on Dome, Colors on Moon

Posted: 27 November 2020

About noon on Thursday, 26 November 2020, I viewed the Sun using the 8x32 Lunt SUNoculars. Sunspots AR2785 and AR2786 (the larger of the two sunspots) were visible. I then set up the D850 DSLR with a 150-600mm lens on a camera tripod. I attached a Thousand Oaks Optical Solar Filter (from my ETX-90) to the lens. I also attached the Kendricks Sun Finder. A cardboard sunshade that I had made many years ago for my ETX worked fairly well.


This is a (cropped) photo of the Sun (f/8, 1/800sec, ISO 400, FL 600mm) showing the sunspots (left to right AR2786, AR2785, and AR2783.


I then set up my old Coronado PST (Personal Solar Telescope). The view was nice.


This is a handheld afocal 32X image of the Sun in the PST taken using an iPhone 11 Pro Max with NightCap Camera (ISO 32, 1/900sec, 1X lens).


The PST was tuned to show the two small prominences at the upper left of the Sun's disk. Sunspot AR2786 is barely visible.

Open: Thursday, 26 November 2020, 1812 MST
Temperature: 64°F
Session: 1559
Conditions: Clear

12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
2" 4X Powermate


1817 MST: LX600 ON, StarLock OFF, High Precision OFF.

Viewed Jupiter and three moons, Saturn and 2 moons, and Mars, 102X.

Viewed the waxing gibbous Moon, 102X.

I stepped outside of the observatory and took this handheld D850 DSLR photo (f/2.8, 1 second, ISO 6400, FL 14mm UWA) of the Moon projected onto the observatory dome.


Next, I mounted the D850 DSLR at prime focus of the 12" telescope for this image of the Moon (1/320sec, ISO 100). Colors have been stretched.


I added the 2" 4X Powermate for these D850 images of the Moon. Compare these images to the iPhone 11 Pro Max images taken the previous night of the same regions.

Crater Plato and Sinus Iridum

Craters Tycho, Clavius, and others

I then did some lunar observing, 406X and 102X.

1905 MST: LX600 OFF.

Close: Thursday, 26 November 2020, 1912 MST
Temperature: 54°F
Session Length: 1h 00m
Conditions: Clear

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