FBAC Double Star Observing Program

Difficulty Name Common Name Magnitudes Separation P.A. R.A. Dec Sky Atlas 2000 Chart No. Comments
1 Gamma Leporis   3.6  6.3 97" 350 05h 44.5m -22 27' 19  
2 61 Cygni Bessel's Star 5.4  6.1 31" 150 21h 06.9m +38 45' 9  
3 Beta Cygni Albireo 3.1   5.1 34" 54 19h 30.7m +27  58' 8  
4 Alpha Canum Venaticorum Cor Caroli 2.9  5.5 19" 229 12h 56m +38 19.0' 7  
5 Zeta Ursae Majoris Mizar 2.3  4.0 14.6" 153 13h 24m +54 55.5' 7  
6 Delta Cephei   3.5-4.4 6.1 41" 191 22h 29.2m +58 25' 3  
7 h 3945   5.0  5.8 27" 52 07h 16.6m -23 19' 19  
8 Kappa Herculis   5.1  6.2 27.4" 13 16h 08.1m +17 03' 8  
9 Iota Librae   4.5  9.4 58" 111 15h 12.2m -19 47' 21  
10 Struve 2840   5.5  6.6 18" 196 21h 52.0m +55 48' 3  
11 Struve 2841   6.4  7.9 22" 110 21h 54.3m +19 43' 17  
12 Gamma Andromedae Almach 2.3   5.1 10" 63 02h  03.9m +42  20' 4  
13 Eta Persei   3.8  8.5 28" 301 02h 50.7m +55 54' 1  
14 Gamma Delphini   4.3   5.5 9.6" 268 20h  46.7' +16  07' 16  
15 Omicron Ophiuchi   5.2  6.6 10.4" 355 17h 18.0m -24 17' 22  
16 Gamma Arietis Mesartim 4.5  4.6 7.4" 1 01h 53.5m +19 18' 4  
17 H  N  84   6.5   8.9 28" 302 19h 39.4m +16d  34' 16  
18 95 Herculis   4.8  5.2 6.3" 257 18h 01.5m +21 36' 8  
19 94 Aquarii   5.3   7.3 13" 350 23h 19.1m -13  28' 17  
20 Struve 3053   5.9  7.3 15" 70 00h 02.6m +66 06' 1  
21 Eta Cassiopeiae   3.6   7.5 13" 319 00h  49.1m +57  49' 1  
22 56 Herculis   6.1  10.6 18" 93 16h 55.0m +25 44' 8  
23 Otto Struve 300   6.4  9.5 15" 261 15h 40.2m +12 03' 15  
24 32 Eridani   4.8  5.9 6.9" 349 3h 54.3m -02 57' 10  
25 Alpha Herculis Rasalgethi 3.5  5.4 4.8" 104 17h 14.6m +14 23' 15  

Rules for double star observing program

While this is intended to be a novice program, all FBAC members are invited to participate.

No Go-To and no digital setting circles.  Analog setting circles may be used.

Record your observations on a log sheet.  Acceptable log sheets should include the following:  Object, Date, Time, Instrument used, magnification, an estimate of seeing, and a simple sketch of the star system.  The sketch should indicate  North and either East or West.

 Submit your completed list of observations for verification.

An FBAC Double Star Award certificate will be awarded for successful completion of the program.