Sky Division of Peterson Engineering Corporation							www.peterson-web.com
		Eyepiece Comparison for use with 8" LX200GPS SCT
8" f10 has a	2000	mm focal length
Magnification = telescope FL / EP FL
Actual field of view (in degrees) = (Dia of eyepiece field stop X 57) / Telescope FL    In this equation, the "57" converts radians to degrees.
Exit pupil size = EP fl / scope focal ratio
Meade 2" Schmidt thread aperture is only 38 mm (1.5" dia)
Alt calc for actual field of view = Apparent field / Mag
										Alternate
				Apparent	Actual					calc for
				field of	field of	Exit pupil	Eye		Approx.	actual
			Dia of EP	View	View	size (mm)	Relief	Tube	Price	FOV
Eyepiece	EP FL	Mag	field stop	(degrees)	(degrees)					(degrees)
Meade 4000 Plössl	56	36	49.0	52	1.40	5.6		2"	$     200	1.46
Meade Super Wide	40	50	45.0	67	1.28	4		2"	$     300	1.34
Meade Super Wide	32	63	37.4	67	1.07	3.2		2"	$     240	1.07
Meade 4000 Plössl	32	63	29.0	52	0.83	3.2		1.25"	$     100	0.83
Meade 4000 Plössl	26	77	23.0	52	0.66	2.6		1.25"	$       80	0.68
Meade Super Wide	24.5	82	28.0	67	0.80	2.45	20	1.25"	$     180	0.82
Meade 4000 Plössl	20	100		52		2		1.25"	$       80	0.52
Meade Super Wide	18	111	21.0	67	0.60	1.8	17	1.25"	$     150	0.60
Meade 4000 Plössl	15	133		52		1.5		1.25"	$       80	0.39
Meade Ultra Wide	14	143	20.0	84	0.57	1.4		1.25"/2"	$     300	0.59
Meade Super Wide	13.8	145	16.0	67	0.46	1.38	10	1.25"	$     140	0.46
Meade 4000 Plössl	9	222	9.7	52	0.28	0.9	10	1.25"	$       80	0.23
Meade Ultra Wide	8.8	227	13.0	84	0.37	0.88		1.25"/2"	$     240	0.37
Meade Ultra Wide	6.7	299	9.8	84	0.28	0.67		1.25"	$     200	0.28
Meade Ultra Wide	4.7	426	6.8	84	0.19	0.47		1.25"	$     170	0.20
ClearVue 2" 30mm	30	67	44.8	80	1.28	3	22 mm	2"	$       99	1.20
ClearVue 2" 15mm	15	133	22.0	80	0.63	1.5	17 mm	2"	$       89	0.60
Panoptic	41	49	46.0	68	1.31	4.1	27	2"	$     500	1.39
Panoptic	35	57	38.7	68	1.10	3.5	24	2"	$     365	1.19
Panoptic	27	74	30.5	68	0.87	2.7	19	2"	$     330	0.92
Panoptic	22	91	25.0	68	0.71	2.2	15	1.25"/2"	$     280	0.75
Panoptic	19	105	21.3	68	0.61	1.9	13	1.25	$     240	0.65
Panoptic	15	133	17.1	68	0.49	1.5	10	1.25	$     210	0.51
Nagler type 5	31	65	42.0	82	1.20	3.1	19	2"	$     620	1.27
Nagler type 5	26	77	35.0	82	1.00	2.6	16	2		1.07
Nag;er type 4	22	91	31.1	82	0.89	2.2	19	2"	$     445	0.90
Nagler type 4	17	118	24.3	82	0.69	1.7	17	2"	$     370	0.70
Nagler type 5	16	125	22.1	82	0.63	1.6	10	1.25"	$     320	0.66
Nagler type 4	12	167	17.1	82	0.49	1.2	17	1.25" or 2"	$     340	0.49
Nagler type 6	9	222	12.4	82	0.35	0.9	12	1.25"	$     280	0.37
Nagler type 6	7	286	9.7	82	0.28	0.7	12	1.25"	$     280	0.29
Nagler type 6	5	400	7.0	82	0.20	0.5	12	1.25"	$     280	0.21
Radian	18	111	18.3	60	0.52	1.8	20	1.25"	$     228	0.54
Radian	3	667	3.3	60	0.09	0.3	20	1.25"	$     228	0.09
UO Konig Mk 70	40	50	46.0	70	1.31	4	20	2"	$     200	1.40
For reference, moon has a 1/2° disk, Pleiades is 2°, North American Nebula is 3°
Eyepieces in green/bold will experience vignetting when used with an 8" telescope due to the 1-1/2" fixed backplate opening.  You will get the
maximum possible unvignetted view with these eyepieces, and should consider the vignetted outer zone as a bonus.
Disclaimer: See actual eyepiece manufacturer's literature for most accurate specifications and pricing.
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