Telescope Specifications

Scope - aperture &	F/ratio	Camera	FOV	Res	Filters
GRAS001 30cm	11.9	IMG1024	23.6 x 23.6	1.38	BVRI
GRAS002 30cm	9.1	ST-8E	11.5 x 17.3	0.68	UBVRI
GRAS004 25cm	3.4	ST-8XE	37.1 x 55.6	2.18	BVRI
GRAS005 25cm	3.4	ST-10XME	37.1 x 55.6	2.18	CRGB-BVR

GRAS008 32cm*	9.0	STL-11000M	29 x 43.5	0.65	V
GRAS015 25cm	6.0	ST-8MXE	20.9 x 31.3	1.23	UBVRI

*Use bin 2x2 to avoid large files and long downloads
FOV is in arc minutes
Res is resolution in arc seconds/pixel
Filters are photometric filters only, other filters (C, L, etc) may be on the filter wheel

Telescope Control

All telescopes are controlled via ACP. The most efficient way to learn ACP can be found on the ACP Scripting page.

Transformation Coefficients

	Filter Combinations
System	B&V		V&R		R&I		V&I		N	Last Updated
	Tv	Tbv	Tr	Tvr	Ti	Tri	Ti	Tvi
G1	0.038	0.921	-0.063	1.095	0.140	0.858	0.065	0.972	2	06-02-08
G2	-0.079	1.231	-0.178	1.041	0.128	0.800	0.058	0.884	2	05-09-08
G4	-0.041	1.235	-0.168	1.106	0.064	0.801	0.031	0.936	4	05-09-08
G5	-0.009	0.991	-0.067	1.059	-	-	-	-	3	05-09-08
G15	-	-	-	-	-	-	-	-	-	-

N is the number of nights used to determine the coefficients. The stated values are the average of each
nights result.

Fields used are SA110 and M67, and the methods and calculations are described in detail in the photometry book of Henden and Kaitchuck.

Telescope Limiting Magnitudes

We will post these data as they become available.

GRAS004

M67. V-Filter. 60 second exposure. NOTE: not corrected for color which will affect SNR! Stars without M67#s are selected from the field.

M67 #	Magnitude	SNR	B-V
56	12.811	115	0.732
61	12.891	116	0.453
62	12.955	106	0.925
--	14.22	52	--
--	14.59	40	--
--	14.73	38	--
--	15.11	21	--
--	15.55	13	--

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