Oh My !

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Don Quixote
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Oh My !

#1

Post by Don Quixote »

After being stored in my garage so as to maintain ambient and lesson acclimation time I discovered this when I set up my Evostar 100ED.
20200301_120829.jpg

It appears that condensation has formed between the doublet.

Crappola !

I am gently warming the lens cell with hand warmers rubber banded to the cell.

I have also gently warmed the tube with the focuser opened and pointed up. I hope the moisture can escape.

Any similar experiences?
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Bigzmey
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Re: Oh My !

#2

Post by Bigzmey »

I had condensation formed on the inner surface of my 6" achro objective on a couple of occasions.

Venting it with focuser up took care of the issue with no apparent side effects.

Hopefully your scope will be fine to Mark.
Scopes: Stellarvue: SV102 ED F7; Celestron: 9.25" EdgeHD F10, 8" SCT F10, Omni XLT 150R Achro F5, Onyx 80ED F6.3; Meade: 80ST Achro F5.
Mounts: ES: Twilight I; Bresser: EXOS2; SW: SkyTee2, AzGTi; UA: MicroStar.
Binos: Orion: Binoviewers, Little Giant II 15x70, WorldView 10x50, Nikon: Action EX 16x50 & 8x40.
EPs: Pentax: XWs & 2xXFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: 2xBCOs, Aspherics, Mark IV, Meade: Plossls.
Diagonals: Baader: BBHS silver mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: Positive lock prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC, Orion: UltraBlock, SkyGlow.
Observing: DSOs: 2246 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 1770, S110: 77). Doubles: 1448, Comets: 18, Asteroids: 95
Don Quixote
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Re: Oh My !

#3

Post by Don Quixote »

Well...patience, a little warmth, and a little more patience did the trick. 😊
20200301_123354.jpg
All seems well. No residue.

Thank you Andrey.

It was disconcerting to say the least. I am now rethinking my storage method for this scope.
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Juno16
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Re: Oh My !

#4

Post by Juno16 »

Very good news indeed! Ill bet that you are relieved!
Jim

Scopes: Explore Scientific ED102 Triplet APO, Sharpstar 61 APO, Celestron Nexstar 130 SLT.
Mounts: Celestron AVX with Orion MM Autoguider, SLT;
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Stuff: ASI EAF Focus Motor, Stellarview FF/FR
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Thefatkitty
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Re: Oh My !

#5

Post by Thefatkitty »

Phew! :D Good to hear/see; maybe the basement?
Mark
Skywatcher 10" Dob, C80-HD, orange tube Vixen C80, Vixen A70LF, CG4 mount
Towa Glass: Sears 6331, '61 Tasco 12TE , 'Towatron' 60mm f/7, Jason 80mm f/15,
Tasco 3T and Towa 3" reflectors. Fujiyama KK orthos, ES 68°, Canon EOS 550D

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helicon
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Re: Oh My !

#6

Post by helicon »

Good news indeed. Sometimes I leave my doublet out all night with the cover cap on covered by a tarp. Taking down the 152 at midnight can be a chore. So far no problems but I try to always bring it in on dewy/chilly nights.
-Michael
Various scopes, 10" Zhumell Dob f/4.9, ES AR152 f/6.5, AWB 5.1" Onesky newt, Oberwerk 25x100 binos, two eyeballs. Camera: ZWO ASI 120
Don Quixote
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Re: Oh My !

#7

Post by Don Quixote »

This had me going for sure.
I was contemplating the disassembly of the lens cell. 😱
I am much relieved.
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Re: Oh My !

#8

Post by Shabadoo »

Yikes!!
Glad she's ok.
Jeff
Dad Joke King (ask my kids); Cereal killer
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Lady Fraktor
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Re: Oh My !

#9

Post by Lady Fraktor »

Doublets are easy to dismantle and replace.
If you are leaving the telescope out then use a stainless steel tea ball filled with desiccant in the focuser, this will prevent the condensation build up.
If in a case put a container of desiccant into it as well.

This one is 2.6" in diameter but there are many sizes available.
https://www.walmart.com/ip/Kitchen-Home ... e/51506031
Telescopes: 1 more than I need but 2 less than I want
Mounts: 5 Equatorial, 3 Az/ Alt
Diagonal: 3 mirror, 2 Amici, 1 Herschel
Eyepieces: Possibly more than 1 person requires
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Don Quixote
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Re: Oh My !

#10

Post by Don Quixote »

Lady Fraktor wrote: Mon Mar 02, 2020 7:41 am Doublets are easy to dismantle and replace.
If you are leaving the telescope out then use a stainless steel tea ball filled with desiccant in the focuser, this will prevent the condensation build up.
If in a case put a container of desiccant into it as well.

This one is 2.6" in diameter but there are many sizes available.
https://www.walmart.com/ip/Kitchen-Home ... e/51506031
Thank you Gabby.
I have disassembled the doublet several times on lesser kit. Still...I do not relish the task if I may avoid it. 😊
Great idea with the Tea Strainers!
This will be my practice going forward.
Thank you.
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Lady Fraktor
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Re: Oh My !

#11

Post by Lady Fraktor »

If you cannot find a ball that fits inside your focuser, a 35mm film canister can have multiple holes put into it and filled with desiccant, it will fit perfectly into a 1.25" eyepiece adapter.
Telescopes: 1 more than I need but 2 less than I want
Mounts: 5 Equatorial, 3 Az/ Alt
Diagonal: 3 mirror, 2 Amici, 1 Herschel
Eyepieces: Possibly more than 1 person requires
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Burris
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Re: Oh My !

#12

Post by Burris »

All good advice. I put cotton T-shirt material in the film canister then add desiccant and close the makeshift bag with cotton thread. Sometimes the desiccant is a bit dusty and I want to eliminate any possibility of dust getting into my scope. That's just me, I over do everything! Lol! Bill
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