Importance of capping the OTA after a session

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KathyNS
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Importance of capping the OTA after a session

#1

Post by KathyNS »

I have gotten lazy about capping my scope after a session if there are more clear nights in the forecast. Each cap or uncap requires a trip out to the observatory, about a 2-minute walk. Yep, lazy.

So, I had some cleaning to do today. I might have to shoot some new flats!
P1180657-1000px.JPG
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DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Hall's Harbour Observatory (H2O) Astrobin
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Re: Importance of capping the OTA after a session

#2

Post by OzEclipse »

Kathy
Pah, that's not a spiderweb, THIS is a spiderweb :lol: .........
ballooning season-3780.jpg
If I left my scope out uncapped, I would barely be able to see through it next morning.

more examples here:-
https://theskysearchers.com/viewtopic.p ... 00#p206200


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Amateur astronomer since 1978...................Web site : http://joe-cali.com/
Scopes: ATM 18" Dob, Vixen VC200L, ATM 6"f7, Saxon ED80, WO M70 ED, Orion 102 Maksutov, ST80.
Mounts: Takahashi EM-200, iOptron iEQ45, Push dobsonian with Nexus DSC, three homemade EQ's.
Eyepieces: TV Naglers 31, 17, 12, 7; Denkmeier D21 & D14; Pentax XW10, XW5, Unitron 40mm Kellner, Meade Or 25,12
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KathyNS
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Re: Importance of capping the OTA after a session

#3

Post by KathyNS »

OzEclipse wrote: Wed Jun 22, 2022 7:03 am Pah, that's not a spiderweb, THIS is a spiderweb :lol: .........
https://www.youtube.com/watch?v=H9_GlqRRs0s
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DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Hall's Harbour Observatory (H2O) Astrobin
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Re: Importance of capping the OTA after a session

#4

Post by Gordon »

When I used to leave my newt in the 'dog house', It regularly got spiders making webs in the tube. Finally had to clean it when they started leaving "bug guts" on the mirror.
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 254N, Orion ST80, Orion Atlas EQ-g mount, Orion SSAG guider. Baader MPCC MkIII coma corrector, Vixen 70mm refractor. Lunt LS35THa solar scope. Skywatcher EQ5pro mount. Imagers: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm Eyepieces: a few, Primary software: Cartes du Ciel, EQMOD, SGP, Nebulosity, Photoshop, StarTools V1.4
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Re: Importance of capping the OTA after a session

#5

Post by KathyNS »

Gordon wrote: Wed Jun 22, 2022 6:20 pm When I used to leave my newt in the 'dog house', It regularly got spiders making webs in the tube. Finally had to clean it when they started leaving "bug guts" on the mirror.
My park position has the tube horizontal, so the spider poop at least doesn't land on the mirror.
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DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Hall's Harbour Observatory (H2O) Astrobin
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Re: Importance of capping the OTA after a session

#6

Post by Gordon »

KathyNS wrote: Wed Jun 22, 2022 7:02 pm
Gordon wrote: Wed Jun 22, 2022 6:20 pm When I used to leave my newt in the 'dog house', It regularly got spiders making webs in the tube. Finally had to clean it when they started leaving "bug guts" on the mirror.
My park position has the tube horizontal, so the spider poop at least doesn't land on the mirror.
So was mine!

Somehow they figured out how to splash on the mirror!
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 254N, Orion ST80, Orion Atlas EQ-g mount, Orion SSAG guider. Baader MPCC MkIII coma corrector, Vixen 70mm refractor. Lunt LS35THa solar scope. Skywatcher EQ5pro mount. Imagers: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm Eyepieces: a few, Primary software: Cartes du Ciel, EQMOD, SGP, Nebulosity, Photoshop, StarTools V1.4
Blog: http://ghswen.blogspot.com/
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Aratus
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Re: Importance of capping the OTA after a session

#7

Post by Aratus »

If you have never had a cap, or lost one, a very cheap replacement is one of those plastic cardboard tube caps used to mail posters and things.
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