Alya (steven_usa)

Celestial hemisphere: Northern · Constellation: Serpens (Ser) · Contains: The star Alya (θ1Ser) · The star θ2Ser

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Alya

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Alya

I had to use DynamicAlignment to manually align the Lights. I can't recall how I came across this double star. According to Stellarium, Alya is 131 light years away and "the other" star (63 Ser B) is slightly further at 142 light years.

What really got my attention here is there is another possible double star that is fairly subtle. Looking near the "red" star in the view, then go "right" ("right" in the original A version, but the better E version is rotated slightly so it is lower right). I'm insure if it is truly a double (stars in gravity pull of each other) or two stars along the same line of sight.

A) Used 7x300" @ ISO400. Taken about mid Oct 2015.

B) Used 32x120" @ ISO400 (with something like 40 Darks and 20 Flats). I had to use dynamicAlignment to manual align these as well. This is also with my re-collimated VC200L (which I did a complete tear down and re-assembly). Taken 4/22/2016.

C) 19x120" @ ISO 400 with T3i camera on ES80 scope (very different field of view, more difficult to actually observe the double)

E) 57x60" 2x2 binned with ASI1600MC-C sensor @ -10degC

Original
B
C
D
Final
E

E

Description: Taken July 23, 2017 with newer equipment (ASI1600MC-C instead of T3i DSLR)

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Astrometry.net job	4268073
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