heater query

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heater query

Postby EIZO » Sun Dec 03, 2017 5:02 pm

Hmmm not impressed that the dovetail bar makes installing the dew heater on the scope a pain, so as a novice do I install it INSIDE or OUTSIDE the dew shield

Inside I assume.

Makes fitting the shield a pain

Thanks
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Celestron Edge 8" Evolution, Esprit 120mm triplet, Sky Tee2, William Optics Binoviewers, many 2" eyepieces. Nikon D4s, D810, Nikkor 70-200 F2.8, 14-24, 70-200, Sigma 150-600 Sport, Gitzo tripods
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Re: heater query

Postby EIZO » Sun Dec 03, 2017 5:02 pm

final image of four
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Celestron Edge 8" Evolution, Esprit 120mm triplet, Sky Tee2, William Optics Binoviewers, many 2" eyepieces. Nikon D4s, D810, Nikkor 70-200 F2.8, 14-24, 70-200, Sigma 150-600 Sport, Gitzo tripods
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Re: heater query

Postby Gfamily2 » Sun Dec 03, 2017 5:59 pm

From looking elsewhere it seems that you're right that the heater band should go inside the dewshield.
Can you attach it to the inside of the dewshield? using double sided tape (or velcro tape) ?
Scopes: Meade 8" SCT, Skywatcher 127mm Mak
For imaging: Pentax K5, Asda webcam, Star Adventurer (new toy)
For companionship: Mid Cheshire Astronomical Group.
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Re: heater query

Postby dave.b » Thu Dec 07, 2017 1:23 am

I found that the Celestron dew shield cannot accommodate the heater strap when it's wrapped around the correcter plate's exterior bezel. No point taping it inside the dew shield in front of the correcter plate, because it won't warm it.
I use one or the other but not both.
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Re: heater query

Postby EIZO » Thu Dec 07, 2017 10:12 am

Yes I think you are 100%, thanks
Celestron Edge 8" Evolution, Esprit 120mm triplet, Sky Tee2, William Optics Binoviewers, many 2" eyepieces. Nikon D4s, D810, Nikkor 70-200 F2.8, 14-24, 70-200, Sigma 150-600 Sport, Gitzo tripods
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Re: heater query

Postby Aratus » Thu Dec 07, 2017 4:40 pm

Yes, the heater needs to go around the tube directly above the corrector plate. They never tell you this in the instructions, and I remember having to ask someone how to use it when I first got one, so don't worry about having to ask. You could argue that using a dew strip means you can do without the dew shield. They are 2 solutions to the same problem, and the dew strip is a better solution. (IMHO!)
I use an 11" Celestron SCT (CPC 1100) on an equatorial wedge, housed in a 2.2m Pulsar observatory. I use a ZWO ASI1600MC and Canon 500D for imaging.
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Re: heater query

Postby EIZO » Thu Dec 07, 2017 6:11 pm

Thanks all, much much appreciated
Celestron Edge 8" Evolution, Esprit 120mm triplet, Sky Tee2, William Optics Binoviewers, many 2" eyepieces. Nikon D4s, D810, Nikkor 70-200 F2.8, 14-24, 70-200, Sigma 150-600 Sport, Gitzo tripods
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Re: heater query

Postby EIZO » Thu Dec 07, 2017 6:12 pm

Oh as I take my scope (or will) to star parties a dew shield is the ONLY defence from morons sticky fingers
Celestron Edge 8" Evolution, Esprit 120mm triplet, Sky Tee2, William Optics Binoviewers, many 2" eyepieces. Nikon D4s, D810, Nikkor 70-200 F2.8, 14-24, 70-200, Sigma 150-600 Sport, Gitzo tripods
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