Sky Division, Peterson Engineering Corp.							www.petersonengineering.com
	Eyepiece Comparison for use with 14" f/10 LX200GPS SCT
14" f10 has a	3556	mm focal length
Magnification = telescope FL / EP FL
Actual field of view (in degrees) = (Dia of eyepiece field stop X 57) / Telescope FL
(Field stop and focal length measurements must be in same units.  The 57.3 factor converts from 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					actual
			Dia of EP	View	View	Exit pupil	Eye		Approx.	field of
Eyepiece	EP FL	Mag	field stop	(degrees)	(minutes)	size (mm)	Relief	Tube	Price	view (min)
Meade 4000 Plössl	56	64	49.0	52	47.1	5.6		2"	$     200	49
Meade Super Wide	40	89	45.0	67	43.3	4		2"	$     300	45
Meade 4000 Plössl	40	89	30.7	44	29.7	4		1.25"	$       80	30
Meade Super Wide	32	111	37.5	67	36.3	3.2		2"	$     240	36
Meade 4000 Plössl	32	111	29.0	52	27.9	3.2		1.25"	$     100	28
Meade 4000 Plössl	26	137	23.0	52	22.1	2.6		1.25"	$       80	23
Meade Super Wide	24.5	145	28.0	67	26.9	2.45	20	1.25"	$     180	28
Meade 4000 Plössl	20	178		52	17.5	2		1.25"	$       80	18
Meade Super Wide	18	198	21.0	67	20.2	1.8	17	1.25"	$     150	20
Meade 4000 Plössl	15	237		52	13.2	1.5		1.25"	$       80	13
Meade Ultra Wide	14	254	20.0	84	19.2	1.4		1.25"/2"	$     300	20
Meade Super Wide	13.8	258	16.0	67	15.4	1.38	10	1.25"	$     140	16
Meade 4000 Plössl	12.4	287		52	10.9	1.24		1.25"	$       80	11
Meade 4000 Plössl	9	395	9.7	52	9.3	0.9	10	1.25"	$       80	8
Meade Ultra Wide	8.8	404	13.0	84	12.5	0.88		1.25"/2"	$     240	12
Meade Ultra Wide	6.7	531	9.8	84	9.4	0.67		1.25"	$     200	9
Meade Ultra Wide	4.7	757	6.8	84	6.5	0.47		1.25"	$     170	7
ClearVue 30mm	30.0	119	44.8	80	43.1	3	22 mm	2"	$       99	40
ClearVue 15mm	15	237	22.0	80	21.2	1.5	17 mm	2"	$       89	20
Panoptic	41	87	46.0	68	44.2	4.1	27	2"	$     500	47
Panoptic	35	102	38.7	68	37.4	3.5	24	2"	$     365	40
Panoptic	27	132	30.5	68	29.3	2.7	19	2"	$     330	31
Panoptic	22	162	25.0	68	24.0	2.2	15	1.25"/2"	$     280	25
Panoptic	19	187	21.3	68	20.5	1.9	13	1.25	$     240	22
Panoptic	15	237	17.1	68	16.4	1.5	10	1.25	$     210	17
Nagler type 5	31	115	42.0	82	40.4	3.1	19	2"	$     620	43
Nagler type 5	26	137	35.0	82	33.7	2.6	16	2		36
Nagler type 4	22	162	31.6	82	30.4	2.2	19	2"	$     445	30
Nagler type 4	17	209	24.5	82	23.6	1.7	17	2"	$     370	24
Nagler type 5	16	222	22.1	82	21.3	1.6	10	1.25"	$     320	22
Nagler type II	16	222	23.0	82	22.1	1.6	10	1.25" or 2"	$     310	22
Nagler type 4	12	296	17.3	82	16.6	1.2	17	1.25" or 2"	$     340	17
Nagler type 6	9	395	12.4	82	11.9	0.9	12	1.25"	$     280	12
Nagler	9	395	12.9	82	12.4	0.9	12	1.25" or 2"	$     240	12
Nagler type 6	7	508	9.7	82	9.3	0.7	12	1.25"	$     280	10
Nagler	7	508	10.1	82	9.7	0.7	10	1.25"	$     220	10
Nagler type 6	5	711	7.0	82	6.7	0.5	12	1.25"	$     280	7
Radian	18	198	18.3	60	17.6	1.8	20	1.25"	$     228	18
Radian	3	1185	3.3	60	3.2	0.3	20	1.25"	$     228	3
UO Konig Mk 70	40	89	46.0	70	44.2	4	20	2"	$     200	47
For reference, moon has a 1/2° disk, Pleiades is 2°, North American Nebula is 3°
Bold green text denotes eyepieces that are vingetted without an EyeOpener
Disclaimer: See actual eyepiece manufacturer's literature for most accurate specifications and pricing.
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