Dew Caps

valleyman · (#1 (**permalink**))

Is there any info on SGL about dew Caps,

Had perfect viewing conditions last night until the Dew appeared.

I have a Celestron 8"SCL any suggestions as to where I can get one or how to make one.

Thanks

brianb · (#2 (**permalink**))

Buy a camping mat. Wrap it tightly round the end of the tube (you don't want it to droop or slip). Use duck tape to stop it unrolling. This is cheaper & more effective than commercial dew shields ... If you want you can use Velcro tape to seal the edge so you can unroll it again for storage.

If you want a neat job, the Astrozap shields (sold by FLO) are cheaper and work better than the other similar products (the felt lining helps).

But the corrector plate on a SCT is a real dew magnet. You may still need active dew control (a heater band) in severe dewing conditions ... a low power 12V "hair dryer" may also be useful.

Demonperformer · (#3 (**permalink**))

Bought a sheet of black card from hobby craft (£2.49 for A3), cut out appropriate sized bit to form a tube and put over the front of the scope. Never had any problems since.

valleyman · (#4 (**permalink**))

Just got some black foam .....will use that. Thanks for the advice

Psychobilly · (#5 (**permalink**))

Asda do a "charcoal grey" foam camping mat for £2.69... plenty to make a few dewshields...

Peter...

kev 102 42 · (#6 (**permalink**))

did we have any celestron dew shilds for an 8" billy

Psychobilly · (#7 (**permalink**))

think we had 8 and 9.25 i need my 8...

kev 102 42 · (#8 (**permalink**))

if i got one pat can have it if hes going to Brecon tomorrow............kev

Psychobilly · (#9 (**permalink**))

valleyman · (#10 (**permalink**))

I will be at the CAS meet tonight, and hope to get one from Graham

GJBC · (#11 (**permalink**))

And Very nice to meet you it was Pat. Hope to see you Tomorrow or might be later by the time you read this. keep our fingers crossed. I will post in the morning to let everyone know we should decide around 9:30 if we are going or not.

Grahame

valleyman · (#12 (**permalink**))

OK Grahem, nice to meet with you too. Some broken cloud here so fingers crossed