reviewed ES 2603

Did a deeper dive into ES 2603 extracting the current values from the Washington Double Star database.

pair	PA	sep
AB	256	6.1
AC	359	11.1
AD	131	16.1
AE	306	18
AF	320	36.2
AG	261	60.3
AH	256	57
AI	279	69.6
AL	71	98.3
AN	206	116.1
AO	78	138.9
AQ	325	45.6
AS	262	20.3
AT	196	27.5
AU	213	35.3

Oh. More stars. Not entirely surprised by that.

But no K; that's weird. There clearly is a pair at the L location. (At least, it is not listed with HS 2603.]

Or J. But that might be correct in that I don't see anything at the J location in SkyTools 3 Pro.

Generated a plot of the positions and separations with my latest generation spreadsheet.

The positions of B, C, E, F, H, I, L, N, and O look pretty good.

D is markedly different. WDS says this is close to A, to the south-east, at mag 14.1 as opposed to what SkyTools shows, with D near O. This faint star is visible in the image!

ST3P did not list a G star; WDS shows it near H. Ah ha, the tight pair in the photo. G is brighter at 9.6 and slightly further from A at 60.3" while H is mag 10.5 and 57.0". G is at an angle of 261 vs. 256 putting it north of H. This all checks out.

The WDS includes Q. It says this is north of F at mag 13.2. F is 11.7. This checks out too.

The S star is purportedly a mag 14.1 star beyond B. I think I have captured this in my image! Just barely visible.

The T and U elements from the WDS I do not see in the BGO photo. They are south-south-west of A. The USNO database says they are magnitude 15 stars. Ah. That's why.

While checking the double star database, I looked up the magnitude value for B. Oh, it's listed at 12.9. There you go. Rather dim. Which matches what I am seeing in the photo.

So, I think I have tagged all of the stars from the WDS save the extremely dim ones...

There is more data offered in the WDS but I did not review or cross-check these.

Ea	291	0.1
EB	146	14.2
EC	86	14.7
EF	334	18.6
EG	246	49
EH	240	47.1
EI	271	54

Interesting.