This DH-3 Dew Heater for 3" aperture telescopes helps keep your optic free of condensation. The hook-and-loop-fastening heater strap is 11.8" long and runs on an external, user-supplied 12V power supply via the included 6.6' silicone-covered cable with an RCA plug.

11.8" Touch-Fastener Strap    Uses 12V Power Supply    Produces 6W of Heating Power    Standard RCA Plug    6.6' Silicone Cable

Related Questions and Answers

Q: 1. Does this work with the 8" Celestron NexStar 8SE, with the dovetail style mount?

A: Celestron Aluminum Dew Shield with Cover Cap (8") BH #CEADSC8 • MFR #94021 Can be mounted to a Celestron NexStar 8SE With or without the dovetail rail.

Q: 2. Does this lens (for Nikon) have 1. focus confirmation, and 2. electronic circuit connectivity for exposure control (Auto, Program, Aperture priority, Shutter priority)? Thank you, and Happy New Year.

A: I use it on a Nikon D300s and it has the focus confirmation light in the viewfinder. The lens also works in Program, AP, SP modes. Hope this is helpful.

Q: 3. Is this the same as the Samyang AE8mm as shown in this photo?http://www.dpreview.com/news/2011/11/25/samyang8nikon?utm_campaign=internal-link&utm_source=news-list&utm_medium=text&ref=title_8Your photo does not show the AE8mm in the lens?

A: It is the same lens. The image on the link you provided is 2 years old, so it is possible that Samyang changed the cosmetic appearance of the lens. Regardless of the lack of the mention AE on the lens, it is still the same lens.

Q: 4. Does this fit the dovetail type mounts on the Celestron Nexstar 8se?

A: Sorry I do not understand your question. The Celestron Aluminum Dew Shield with Cover Cap (8") BH #CEADSC8 • MFR #94021 is a dew shield. Has nothing to do with the mount.or the dovetail.

Q: 5. will it work on a nikond7100?

A: This lens is for DX/APS-C Nikon D7100 cameras. You are good to go.

Q: 6. I have an ioptron RC 8" That I currently cover with an Astrozap for. Was wondering if this would fit?

A: The only conformation I can give you is that the Celestron Aluminum Dew Shield with Cover Cap (8") BH #CEADSC8 • MFR #94021 Use the Aluminum Dew Shield on your 8" EdgeHD, RASA, or Schmidt Cassegrain (made after 2006) telescope tube confidently, knowing it was created for your exact instrument.

Q: 7. If photos can be taken does that mean that videos can also be taken?

A: It is possible to manually shoot a video with the Hestia telescope using your phone's camera. We do not guarantee the quality of your video while using Hestia. Please note that, at this time, it is not possible to shoot a video with Hestia through the Gravity app.

Q: 8. What's the difference between this and the other 3.5 Samyang (for Canon). There are two, and ALL I can see is this one comes with the lens shade attached, the other one it's removable. And ten bucks more...

A: Aside from their cosmetic differences the two Samyang 8mm f3.5 fisheye lenses for Canon are the same aside from the removable hood option on the other version. The hood is removable on that version so as to not interfere with the image when shooting in full frame digital format or 35mm film.

Q: 9. Will this shield fit the CPC 1100 GPS?

A: According to Celestron the Celestron Aluminum Dew Shield with Cover Cap (11") BH #CEADSC11 • MFR #94023 Fits 11” Schmidt-Cassegrain, EdgeHD, and RASA telescope tubes

Q: 10. Does the tilt lock on the left side allow for low friction to aid in smooth tilts? Or it is just for locking the tilt?

A: The tilt lock can be adjusted to increase or decrease friction and aid in tilts.