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Images (S621) |
Objects Session Notes
R CrB - RCB variable star Photometric Monitoring - Variables - None
(R CrB attempted but failed due to software interruption & cloud)
Astrometric Monitoring - Nearby Stars - None
- Attempted Evening Session (10 mins duration).
Initially clear , but clouds quickly rolled in.
Wind 15 mph+- Very short session using Fully Automated operation until session was halted by developing cloud and wind (Session was monitored from within the observatory initially and then remotely from indoors). - Main aim of the session was intended to be test recent bug fix and fine-tuning in my AllSky Software (running on AllSky/Weather computer) to correctly display telescope status, location and next targets (running on Main Observatory Computer). Secondary aims were to acquire images of a selection of deep sky, variable star & nearby star targets. - Dome shutter chain came off the Shutter Drive Sprocket during the session and left the Drive Motor running and believing that it was still opening the shutter. Luckily it wasn't - the shutter was shut. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding - Ambient Temperature: 16°C (minimum) increasing to 17 - CCD Temperature: -10°C (72% av. power) - Notes from 2018-08-21 >>
R CrB (Corona Borealis) Locate Image following initial slew Targeting a point at offset of W -2.0', N 3.5' from R CrB in order to also pick up TT CrB, the image has a pointing error of W: -0.77', N: 2.37', meaning that R CrB lies just off the bottom of this image. (Software interruption and then cloud prevented final target centering and acquisition of main images) |
CCD Image (50% size) 10 sec exposure (single frame), 3x3 binning, C Filter 2018-08-21 21:22 UT (#620001) 12" LX200R (at f/10.4) + ST-10XME |
RCrB - reference image (2008) |
Annotated CCD Image 3 x 30s exposure (average combine), 2x2 binning, C Filter 2008-05-02 23:32 UT (#285071-73) 8" LX200 + ST-7E |
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This Web Page: | Images - Session 620 (2018-08-21) |
Last Updated : | 2024-06-13 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |