Seestar Photometry of BH Aur

I’ve been using the Seestar for ~ year now and experimenting with the Seestar_Alp application. Now, I can reach targets below the celestial equator while equatorially mounted and have the ability to alter the gains,dithering ,and also use longer integrations.

I’ve constructed a small array of (3) S50’s and have begun monitoring variable stars and minor planets. I recently conducted several extended runs of BH Aur using 60s exposures. ~ 1250 observations were debayered, aligned,and the green channel extracted for further analysis in TychoTracker.

The period found from these data sets is 10.948 +/- 0.003hrs which is in close agreement with the professional literature. I think this is an encouraging result that demonstrates the capabilities of the S50 for photometry applications. See below.

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Hi Mike,

That’s a great light curve!

In terms of technical specifications, the SeeStar is very similar to a DSLR camera, just on an AltAz mount. I think it should produce reasonably good results, as you have demonstrated here.

One thing to be aware of is that the sensor admits more near-infrared light than traditional filters, so the green channel could be closer to V+I rather than V alone.

Brian

According to published information the Seestar S50 has a built-in UV/IR cut filter, said to result in an effective bandwidth of 400-700nm.

Mike: Wonderful! Please contact me off-line: Bob@RKBuchheim.org
Thanks,
Bob B.