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Ok,
Finally found the time to play with the photometry feature of Maxim.
Using some reference star magnitudes from SkyX, I measured the magnitude of the object at 16.4. Now bear in mind this is the first time I have fiddled with photometry, so I could be giving you figures for "Playmate of the Month".
I performed the measurements on ten calibrated and stacked images. I used 2 reference stars and 1 check star. The magnitude of the check star was within 0.15 of the published value. My camera is an ABG sensor, but I deliberately picked stars with <50% saturation of the pixels. I varied the annulus & gap widths to try and avoid sampling the background galaxy, but there was no dramatic change in the magnitude of the object.
Any suggestions as to why my measured value is over a magnitude lower than what you have measured??
Cheers,
DT
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