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AaronAndrews - 01 Dec 2016
Observation on 25/11/2016:
- Observation 2: 20161125
- Took multiple luminous, red, visual, and blue frames of Double Cluster and Dragonfly Cluster.
- Used guide scope to control star tracking. Therefore, could stack frames.
- Example: Double cluster, blue, total exposure time (for 5 frames) 200s - more stars visible:
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- Uplaoded all stacked frames to astrometry.net to fit:
- Coordinates at image centers:
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| Filter | RA | DEC |
Double Cluster | blue | 02h 22m 06.252s | +57° 11' 05.203" |
| visual | 02h 22m 05.818s | +57° 11' 11.674" |
| red | 02h 22m 05.973s | +57° 11' 10.444" |
Dragonfly Cluster | blue | 01h 19m 21.635s | +58° 21' 26.031" |
| visual | 01h 19m 29.901s | +58° 21' 01.003" |
| red | 01h 19m 26.550s | +58° 21' 11.465" |
Simulation:
Simulation_test11.py.txt
- Can generate background mean (or standard deviation) using taylor series:
- In order to get parameters, set up code to do a fit over an array of values using the expansion, up to a set number of terms.
- First applied fit directly to image of M103 from observation 1, up to 25 terms:
- LEFT: original image, M103. RIGHT: taylor series fit (25 terms, origin=(0,0))
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- Then applied median analysis to frame first, then attempted fit (25 terms):
- LEFT: Median filter for M103. RIGHT: taylor series fit (25 terms, origin=(0,0))
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- Attempted to fit up to 100 terms - failed.