Photometry : 16
Qatar 2b
Exoplanet
Transit |
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Exoplanet transit Qatar 2b in Virgo
Plot of brightness of star Qatar 2 as planet (b) crosses its face
Image obtained by Steve Futcher & Steve Broadbent (HAG members)
with University of Portmouth Physics project students:
A. Bugden, S. Crocker, N. Gorton, G. Lowe, E. Smith
HAG 24" RC 'David Harris' telescope, Moravian G4-9000 Camera, Analysis with HOPS software. Details on images.
93 x 120sec light frames + 8 dark, 27 flat, 22 bias frames, Rc filter
2021-05-06 @ 20:47 UT
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V1828 Aql |
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V1828 Aquilae, an interesting white dwarf and red dwarf eclipsing binary system.
The white dwarf heats the facing side of the red dwarf producing a distorted light curve.
HAG 24" RC, Moravian G4-9000
20 sec each : Bin x2 : B, V, R photometric filters
2018-08-10 @ 22:48 UT
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Recent
Photometry |
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Photometry of Eclipsing Binary AC Bootis - completed light curve
Light curves using B, V and R photometric filters
HAG 24" RC. Moravian G4-9000
20 sec, BVR
2018-07-31
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Recent
Photometry |
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Photometry of Eclipsing Binaries : Results to 15-Feb-18 : to be continued …
Light curves using R, G and B filters
HAG 24" RC. Moravian G4-9000
30 sec (Peg), 45 sec (Aur) RGB
2018-02-15
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Triton
occults
star |
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Occultation of star UCAC4 410-143659 by Neptune's moon Triton
Star mag 12.66(V), Triton mag 13.46
HAG 24" RC reflector. Watec 910HX video camera,
Total of 1153 frames at 2 frames per sec
2017-10-05 @ 23:43 to 23:53 UT
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RT
Andromedae |
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Photometry of Eclipsing Binary RT Andromedae
Light curve using R, G and B filters
HAG 24" RC. Moravian G4-9000
15 sec RGB
2016-11-29 @ 23:34 UT
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RT
Andromedae
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Blue minus Red magnitudes during light curve
Shows change in overall colour during eclipses
HAG 24" RC. Moravian G4-9000
15 sec RGB
2016-11-29 @ 23:34 UT
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UV
Leonis
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Photometry of Eclipsing Binary UV Leonis
Secondaty minimum
HAG 24" RC. Moravian G4-9000
7 and 5 sec, Luminance
2016-03-13 @ 20:03 UT
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Nova Delphini
2013
Page 1 |
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Photometry of Nova Delphini 2013 - 1 Discovery
Discovery and position
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Nova Delphini
2013
Page 2 |
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Photometry of Nova Delphini 2013 - 2 Images
Left - Blow up of nova area of picture taken during Perseid meteor watch
Right - First image of the same region showing the nova (brightest object)
Canon 700D, ISO 1600. Left single image, 18mm, 30sec. Right 11 stacked images, 60mm, 4sec
2013-08-19 @ 21:37 UT
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Nova Delphini
2013
Page 3 |
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Photometry of Nova Delphini 2013 - 3 Measurement
Any slice of the image can be selected. A plot of light intensity across the slice is produced.
The high peak on the left is the nova.
To a good approximation the peak height is proportional to the magnitude of the object
2013-08-19 @ 21:37 UT
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Nova Delphini
2013
Page 4 |
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Photometry of Nova Delphini 2013 - 4 Analysis using spreadsheet
The same process is used to measure the peak heights of comparison stars of known magnitude
A plot of peak height against magnitude gives the best fit straight line and error estimate
The nova peak height can then be used to predict its magnitude
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Nova Delphini
2013
Page 5 |
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Photometry of Nova Delphini 2013 - 5 Light Curve
Analysis of stacked multiple images on every clear night available gives a light curve plot
The quality of seeing gives variation in error estimates of the magnitude
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SW
Andromedae
Page 1 |
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Photometry of SW Andromedae
SW And image and AAVSO chart
HAG 16" reflector. Canon 700D
60sec @ ISO 800
2013-11-21 @ 20:22 UT
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SW
Andromedae
Page 2 |
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Photometry of SW Andromedae - Light Curve
Rise to maximum of RR Lyrae type variable SW Andromedae
HAG 24" reflector. SBIG 8300M camera
10 sec images taken every 5 min
2014-01-11 @ 19:12 to 00:17 UT
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