Lobster Nebula, Cat's Paw Nebula, Barnard 92 dark nebula,
Posted: 3 September 2021
Had 0.9" rain overnight Tuesday, 31 August, to early Wednesday morning, 1 September 2021. Cloudy skies continued until Thursday, 2 September.
Open: Thursday, 2 September 2021, 1829 MST
Conditions: Mostly clear
Upon arrival at the observatory I removed the Dome Cover. I then relaxed on the observatory patio bench for a few minutes while waiting for the Sun to set.
1848 MST: sunset.
1850 MST: LX600 ON, StarLock OFF, High Precision OFF.
Viewed the planets Venus, then Mercury, 102X. Both planets were near half phase.
Returned to the bench for awhile.
1914 MST: viewed the planet Saturn, 102X. Two moons were visible.
Then prepared the D850 DSLR for Deep Sky Object (DSO) imaging.
Relaxed on the bench. I enjoyed watching the stars come out. Humidity was pretty high at 53%. My logbook paper was getting slightly damp.
2000 MST: back inside the observatory. Mounted the D850 DSLR at prime focus + focal reducer + UHC filter, focused on the star Antares, and locked the 12" primary mirror.
2009 MST: StarLock ON.
Imaged these two nebulae, StarLock autoguided, 5 minutes, ISO 12800, White Balance 5560K. Images slightly cropped.
NGC6357 (Lobster Nebula)
NGC6334 (Cat's Paw Nebula)
2031 MST: Wi-Fi ON.
Used SkySafari 6 Pro to GOTO the next imaging target. Took this StarLock autoguided image (Black-and-White), 5 minutes, ISO 12800, WB 5560K.
Barnard 92 (dark nebula)
2041 MST: StarLock OFF, Wi-Fi OFF.
Viewed Barnard 92 (dark nebula), 102X. Nice view.
Viewed Saturn and three of its moons, 102X.
Mounted the D850 DSLR at prime focus + 4X Powermate. Imaged Saturn (1/20sec, ISO 1600, WB Auto, cropped) and Jupiter (1/125sec, ISO 1600, WB Auto, cropped). The Great Red Spot is visible at the lower left of Jupiter's disk.
2106 MST: clouds were increasing from the southwest.
Viewed Jupiter and four moons, 102X.
Then viewed the following DSOs, 102X: M8 (Lagoon Nebula), M16 (Eagle Nebula), M17 (Swan Nebula), and M20 (Trifid Nebula).
2117 MST: LX600 OFF.
2125 MST: took a Sky Quality reading and reported the result to Globe at Night. While outside of the observatory I noticed that the observatory walls were very wet with dew.
Close: Thursday, 2 September 2021, 2134 MST
Temperature: 70°F, Humidity 70%
Session Length: 3h 05m|
Conditions: Mostly clear, SQM 20.90
My SkyShed POD Dome Cover review has been posted.
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