Caps for FilterWheel

[nightster]

I recently received my SX Filter wheel. It has the T threads fore and aft.  But I was surprised it didn't ship with caps of any type.  Once loaded with my filters, I think it would be wise to cover this when not in use. Anyone have a cheap solution for this?

[SnakeyJ]

I'd like some too - one from my coma corrector fits, but is otherwise engaged! As a stop gap I wrapped the whole fw in cling film - not pretty, but effective ;-)

[nightster]

You might be on to something.  Maybe just a large Zip lock plastic bag.  

[MattJenko]

I was thinking the same thing. An old SGL thread points at this site, which I am tempted by : http://www.billetparts.co.uk/catalog/astronomy-c-0_58.html?sort=3a&osCsid=9ca5af59dbcbda69f0cb4c55b87692af&display=all

Cling film is a nice idea.

[Uplooker]

Ha, ha.Not just me then. I have recently purchased a SX FW second hand. The seller did place the FW inside a plastic bag.

Ian

[martin_h]

Zip lock bag with a small desiccant bag in will do the trick.

[SnakeyJ]

The ziplock and dessicant sounds good, but not elegant.   Going back to Jeff's original post, it is a shame that the manufacturers do not provide covers from new - especially if you are fully loaded with £ 600+ of filters!

[Physopto]

Be careful with the desiccant type. Some bags allow broken silica desicant to filter through. Desicant in that state is vicious stuff as very sharp particles! On treated glass surfaces will produce some micro scratches a over time can completely ruin the surface coatings. The desicant tends to crack under heating to replenish its absorbant properties.

Derek

[nightster]

I found  these:  http://www.teleskop-express.de/shop/product_info.php/language/en/info/p5865_Baader-T2-Protection-cap-for-female-T2-thread.html

They are perfect, but not offered at any dealer in my country. And 33 euro shipping fee to the US is a bit of a premium.  I was hoping someone had found that some commonly available item works great as a cap on a T thread. Like the old trick of using a plastic Film canister to make a collimating eyepiece.   

Just as Jake says, I'll have $655 in 7 little thin pieces of glass, I'd prefer to take care of them.  I guess this is yet another reason to build an Obsy. But as I sit here and type this I may have come upon something.  Since I will no longer be using my DSLR and the Canon bayonet to T thread adapter has a plastic lens cap on it I can use that on the male side of the FW. Now to find a cap with M48 threads that mate to the T thread to 2" adapter.....

[Horwig]

Why don't you try some cheap plastic m42 rear lens caps? OK, they are 1.0 mm thread pitch, not 0.75, but if the plastic is soft enough, they should work.

Huw

[Physopto]

As MattJenco has pointed out

http://www.billetpar...2af&display=all

I believe they are good and not too expensive.

[Bizibilder]

Maybe Fleabay??  http://www.ebay.co.uk/itm/Five-High-Quality-Dust-Caps-for-1-25-Telescope-Eyepieces-or-Others-Brand-New-/181186616439  (Just Googled them - I've no idea if they are any good!!!)

Also Astroboot  http://www.astroboot.co.uk/AstroBoot/telescope-and-astronomy-stuff.html?needle=1.25  scroll down to find male/female caps and plugs.  Again usual disclaimer!