DSLR imaging: Elephant Trunk Nebula,
Cassiopeia Open Star Clusters, Star HD7924
Posted: 25 September 2016
Open: Saturday, 24 September 2016, 1802 MST
1818 MST: spotted Venus in southwestern sky with naked eye.
1819 MST: sunset.
1820 MST: LX600 ON, StarLock OFF, High Precision OFF.
1824 MST: viewed Venus, 102X. Gibbous phase visible.
1826 MST: viewed Saturn, 102X. Titan not yet visible due to still bright sky. 1837 MST: the moon Titan was now visible, 102X. 1844 MST: the moon Rhea was now visible, 102X. Seeing at Saturn was getting worse. 1851 MST: the moon Dione now visible, 102X. 1900 MST: the moon Tethys now visible, 102X.
1904 MST: viewed Mars, 102X. Seeing not good, but there was a hint of a limb cloud.
1926 MST: took this handheld D7200 DSLR photo of the constellation of Cassiopeia, f/3.5, 2 seconds, ISO 5000, FL 18mm:
1934 MST: mounted the DSLR at the 12" prime focus + focal reducer for imaging some deep sky objects (DSOs). High Precision ON. Slewed to IC1396 (Elephant Trunk Nebula). After doing a 2 minute, ISO 6400, exposure to check and adjust framing, I took this (black-n-white) image of the Elephant Trunk Nebula, 5 minutes, ISO 6400, White Balance 4000K, StarLock autoguided:
Next, I took a series of 1 and 2 minute, ISO 3200, White Balance 4000K, StarLock autoguided, exposures of some open star clusters in the constellation of Cassiopeia:
Next, I took this (cropped) image of star HD7924 in the constellation of Cassiopeia, 1 minute, ISO 3200, White Balance 4000K, StarLock autoguided:
This star has 3 "super Earth" planets.
2138 MST: ended DSO imaging.
Close: Saturday, 24 September 2016, 2202 MST
Session Length: 4h 00m|
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