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THE HEATERS
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The heaters have been built to use only as much power as necessary and thereby not waste energy. They have sponge insulation on one side to prevent heat being lost into the atmosphere. The heat is directed into the optics instead and because of this, less energy is needed to keep your optics moisture free.
The heaters wrap around your objectives, label side out and are held in place by elastic/Velcro attachments. Telrad heaters are held in place with an elastic band. The heaters for secondary mirrors are placed on the backside of the secondary and can be held in place by using the polyester batting found inside the secondary mirror holder. The .965/1.25", 1.25/2" and 2" are considered eyepiece heaters. The 1.25/2" and 2" are also heaters for camera lenses and certain binoculars.

Listed below are the various heaters and the minimum and maximum outside tube diameters they will fit.Outside tube dimensions can vary greatly from telescope to telescope, even though they may have the same aperture.This list will help customers to fit heaters to their telescopes.
.965" for .965" eyepieces and finder scope eyepieces
1.25" for 1.25" eyepieces
2" For 2" eyepieces, 50 mm finder scope objectives, smaller camera lenses. Can also be used on 1.25" oculars but a bit big. To use on 1.25" oculars just slip heater off 2" eyepiece and hang over 1.25" eyepiece.
3" will fit 3.5" to 5" OD (90mm to 130mm OD)
4" will fit 5" to 5.5" OD (130mm to 145mm OD)
5" will fit 5.5" to 6.5" OD (140mm to 165mm OD)
6" will fit 6.5" to 8" OD (165mm to 200mm OD)
7/8" For Meade 7" refractor, 7" Maksutov-Cassegrain, 8" SCT, Celestron C8, Astro Physics 7" Refractor. Will fit 8" to 9.5" OD (200mm to 250mm OD)
9/10" For Celestron C9.25, Meade 10". Will fit 10" to 12.5" OD (250mm to 310mm OD)
11" For Celestron C11. Will fit 12.5" to 13.5" OD (310mm to 340mm)
12" For Meade 12 SCT. Will fit 13.5" to 15.5" OD (340mm to 400mm OD)
14/16" For Celestron C14 & Meade 16" SCT. Will fit 15.5" to 18" OD (400mm to 460mm OD)
S2 For Newtonian secondary mirrors with a minor axis of 1.83" to 2.14"
S3 For Newtonian secondary mirrors with a minor axis of 2.60" to 3.50"
S4 For Newtonian secondary mirrors with a minor axis of 4.00" and up
P8 For Newtonian 8" primary mirrors
P10 For Newtonian 10" primary mirrors
P12 For Newtonian 12" to 14" primary mirrors
P16 For Newtonian 15" to 18" primary mirrors
lap top computer heater For all lap top computers, can also be used on for desktop CPUs that are exposed to cold temperatures. Also makes a great seat warmer!
LX200 control heater For the LX 200 & Magellan ll control pad. Can also be used with all other similar computer controls. Stops slowdown of functions in cold weather.
Eyepiece box heater For eyepiece and accessory boxes. Can also be used as a seat warmer.
Item Description Price
JKS-HTR2/3 For 2" to 3.50" O.D. (50mm to 130mm O.D.) $34.95
JKS-HTR3 For 3.50" to 5" O.D. (90mm to 130mm O.D.) $39.95
JKS-HTR4/5 For 5" to 5.5" O.D. (130mm to 145mm O.D.) $39.95
JKS-HTR5/6 For 5.5" to 6.5" O.D. (140mm to 165mm O.D.) $44.95
JKS-HTR7/8 For 8" to 9.5" O.D. (200mm to 340mm O.D.) $49.95
JKS-HTR9 For 10" to 13.50" O.D. (250mm to 340mm O.D.) $59.95
JKS-HTRTELRAD Dew Heater for Telrad® Finderscope $24.95

 

SECONDARY MIRROR HEATERS
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Item Description Price
JKS-HTRS2 Minor axis from 1.83" to 2.14" $29.95
JKS-HTRS3 Minor axis from 2.60" to 3.50" $29.95
JKS-HTRS4 Minor axis from 4.00" on up $29.95
*All heaters for secondaries have 2' of wire ending with an RCA plug.
  A 6' patchcord is also supplied with each heater.

 

 

msd-t-2090.jpg (63414 bytes) Seasonal Star Chart
This star finder is best designed for night time, and outdoor use. Major stars are printed in luminous ink which glows in the dark. More than 1000 stars and deep sky objects are listed and charted. Seasonal Star Chart has information on various types of galaxies and nebulae. 20pgs.
ITEM# MSD-T-2090
$19.95
Moon Map
Large 41½" x 37½"
Paper Poster
ITEM# HPL-1302-1
$12.95
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ALL Telescopes are for U.S.A. sales ONLY. Please contact your international representative for dealers in your area.
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