Martin 2 Posted October 17, 2006 Share Posted October 17, 2006 Set up tonight in what was a fantastic sky, seeing must have been 8/10, milkyway crystal clear, within 3/4 of an hour totaly dripping with dew.M2 Link to comment Share on other sites More sharing options...
CELESCOPE Posted October 17, 2006 Share Posted October 17, 2006 go get ya self a dew strip M2 YOU NEED IT THIS TIME OF YEAR FOR SURE ROG Link to comment Share on other sites More sharing options...
radioactive Posted October 17, 2006 Share Posted October 17, 2006 Just knocked one up here myself put it on the SCT ready for KIelder in the morning Hope it works LOL Link to comment Share on other sites More sharing options...
lunator Posted October 17, 2006 Share Posted October 17, 2006 MartinMost of my observing has been dew affected this monthI use a hair dryer to combat it at present but a dew strip is on the shopping list.CheersIan Link to comment Share on other sites More sharing options...
Andrew Posted October 17, 2006 Share Posted October 17, 2006 Anyone got any advice on dew solutions for newtonians?The only dew problems I have are with the secondary. I'll tried a dew shield on the end of the tube which is okay but not a complete solution. I wondered about a applying a little heat to the back of the secondary, but I'm not much good at electrical DIY. Presumably dew strips are only meant for SCTs? Link to comment Share on other sites More sharing options...
weareborg Posted October 18, 2006 Share Posted October 18, 2006 Anyone got any advice on dew solutions for newtonians?The only dew problems I have are with the secondary. I'll tried a dew shield on the end of the tube which is okay but not a complete solution. I wondered about a applying a little heat to the back of the secondary, but I'm not much good at electrical DIY. Presumably dew strips are only meant for SCTs?I was just about to ask the very same question, when i read your post. It must be because we have the same name. andyPS What are you planning on using as a Dew shield on your Newt? Link to comment Share on other sites More sharing options...
bern Posted October 18, 2006 Share Posted October 18, 2006 Anyone got any advice on dew solutions for newtonians?The only dew problems I have are with the secondary. I'll tried a dew shield on the end of the tube which is okay but not a complete solution. I wondered about a applying a little heat to the back of the secondary, but I'm not much good at electrical DIY. Presumably dew strips are only meant for SCTs?Dew strips are used on Refractors, Maks, SCT's, eyepieces, finders, binoviewers, handsets and even Newtonians :shock:You can use a small eyepiece heater at the back of the secondary and that will do the job. A suitable resistor properly wired would also work in that position and might be better. You've got to keep the heat output low to avoid air currents in the light path. More of a problem for Lunar/Planetary people than for DSO types.bern Link to comment Share on other sites More sharing options...
Kaptain Klevtsov Posted October 18, 2006 Share Posted October 18, 2006 So on a Mak. where would the dew strip go? Round the outside of the front glass or round the dewshield?Captain Chaos Link to comment Share on other sites More sharing options...
Andrew* Posted October 18, 2006 Share Posted October 18, 2006 sounds like i might need one of them. How much do they cost, and from where?there's an old unused hairdryer about. how would i power that thing?thanks,another Andrew! Link to comment Share on other sites More sharing options...
bern Posted October 18, 2006 Share Posted October 18, 2006 So on a Mak. where would the dew strip go? Round the outside of the front glass or round the dewshield?Captain ChaosCC, I put the strip around the corrector then fit the dewshield. More effective that waysounds like i might need one of them. How much do they cost, and from where?there's an old unused hairdryer about. how would i power that thing?thanks,another Andrew!I sell the Dew-Not range of heaters strips which use less power and don't need an expensive controller, just an adaptor cable or splitter. http://www.modernastronomy.com/catalogue.html under Dew control (believe it or not!)I used to use a hair dryer but it's a faf and once you've used heater strips you won't go back.bern Link to comment Share on other sites More sharing options...
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