Clear skies - Jim Crazy PNW imager !
A-P Mach1 on 12" concrete pier - ROR structure.
Tak FSQ85-EDX, Tak FS-128. Orion 8" f/3.9 w/MoonLite motorized - MPCC MkIII CCD:
SBIG 8300M/FW8, Astrodon 36mm LRGB, 5nm Ha, 3nm SII, OIII - Canon EOS 6D unmod SSI3, SSAG,
Skytools3pro, MaxImDLpro, PSCS5, PSPpro, TheSkyX, TheSky6, BYE, StarTools
Orion XX14g -for visual- diags, ep's, accy tubes, Binocs .
Clear skies, Erik
Visual astronomer since 1978.
Matthias Wirth 16" f/5
Takahashi FS-102 NSV on EM-10
Celestron 1983 C5
Zeiss, TeleVue and Celestron eyepieces
Nikon 18x70 IF-WP Zeiss Victory FL 7x42 Zeiss Victory FL 10x32
Kmart 40mm-Thanks Mom|Jason60mm-Thanks Dad|C80SS-Thanks Wife|C90|C102|C6XLT|AP130EDFGT|C-11XLT EQ-2|EQ-3|CG5GT|Mach 1 & Eagle "For once you have tasted flight, you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return".-Leonardo da Vinci "We're all in the gutter, but some of us are looking at the stars."-Oscar Wilde ~RIP Dad, you were my best friend...Godspeed!~
Quote:Erik:I had my scope in the house for about 2.5 days before I packaged it up. It was mostly in the case and we keep our house quite cold (in order to feed my telescope habits ). I did keep an eye on the "frost" to see if it changed during that time. It was from memory though but it didn't seem like anything was melting. It is hard to believe but considering it was in the case and our house is cold it could have been frost I suppose. If it was oil would it disappear? I don't know.
A-P 130EDF GT
StarMaster 11 (Highly Modified)
Canon 10X30 IS Binocs
Complete Sets of Nagler T4's, T5's, T6's, TV Plossls, TAK LE's, UO Orthos, Celestron Ultimas
Quote:Quote:Erik:I have a TEC160FL and have never seen this on/in my lens. The optical coupling agent that TEC uses is more of the consistency of a gel and not an oil, for whatever thats worth. Thanks Paul. Yes it did seem like the mark I saw was more gel like. It didn't come off with a simple wipe. I didn't have to scrub but I did have to use some pressure to get it to come off but then I ended up just spreading it around and making the lens look bad. I hope the liquid I use will take care of it and won't streak either but I guess a little streaking won't matter.
Quote:Erik:I have a TEC160FL and have never seen this on/in my lens. The optical coupling agent that TEC uses is more of the consistency of a gel and not an oil, for whatever thats worth.
Quote:With all the oil related stories, is it just me that thinks oil spaced design is becoming a liability?
Explore Scientific 127mm ED APO Orion 100ED Orion 90mm Achro Explore Scientific 80mm ED APO Orion ST80 Celestron SP-C6 Newt Orion XT10i Meade 12X60Orion Ultra View 8X42---------- Super Polaris CG-5GT ES Twilight I Skyview AZ Paragon Plus ---------- Torrance,CA
If it weren't for physics and law enforcement, I'd be unstoppable.
Quote: I refuse to use my oil-spaced in temperatures below 0*C/32*F any longer after I had an issue with my TEC 140. It was around 20*F,maybe a little less, after several hours of viewing, I noticed the view getting hazey. Figuring the lens was finally, fogged up, I took a look at it with the flash light. The center of the lens displayed a three- dimensional, golf ball sized, ball of...I don't know what. It looked like a globular cluster really. I assumed it couldn't be good as it was internal between the lens elements and not on the inner or outer surface only. I take the usual steps to prevent thermal shock, and brought it in. By the next morning thankfully, it was gone, no leaks, no sleeks, no issue. I contacted Yuri and he really didn't know. Perhaps, he said, seperation of the elements with freezing or aeration of the oil. I could send it back, or simply watch out for it. Future use showed no ill-effect, so I simply used it, but NEVER at that temperature again. My newer AP has never been out in it...I simply refuse and have other scopes for the colder months. I'm aware that Mike has an 8" in Alaska, but there is a difference with it...he leaves it in an observatory. It isn't going in and out like most of us have to do. These incidents are rare, but do occur enough that I think it warrants a public service announcement. YMMV, but for me, in my locale which is known for snow and extreme cold that rivals other locations, I won't take a chance again.
14.5" Starmaster with ServoCat and Argo Navis 1966 Unitron 4" Model 152 EQ Tec 140 TV NP101 f/5.4 APO Telvue .8 Focal Reducer FLI ML8300 and CFW-2-7 filter wheel Astrodon Gen2 RGBL 2" filters Baader 2" Narrow Band Filters Borg 50mm Guide Scope/ATIK Titan Guide Camera AstroPhysics AP900 Losmandy GM-8 Gemini
Quote:Some of you will remember my post about getting frost inside the objective of my Tec 160FL. Yuri wasn't sure that is was frost or an oil leak so I sent the objective to him and as it turns out it was frost and by the time it got to him it had melted. So he sent it back to me as is.I got my objective back tonight and saw what looked like a possible 1 inch long scratch on the bottom of the objective so I took a new micro fiber cloth to see what it was. I think it was oil residue but I am not sure. It wasn't a scratch but from trying to get it off I made it worse and I spread it across the lens as I was trying to clean it. Now there is a slight haze as you look at it with a light.Should I now use the standard methods of liquid that have been recommended on the site to clean it trying to get rid of the haze. I know there are many different liquids that people use and everyone has their favorite. Any best one for oil? I have the Kodak papers that I use for my camera lenses and I have read some use plain non-perfumed Kleenex. Is there any best material I should use? Can I use new micro fiber cloths. I have quite a few of those.Thanks for your advice. Kent
Quote:TR,I have had my AP-130GT out lately in the upper teens and low 20's with no problems. The scope is kept in its case and in my unheated garage so that there is little more than 10-15 degree farenheit temp difference. Below that temp. I give out, not the scope.That said, I won't use the AP's at the peak of pollen season, on very windy nights or any time there is a salty breeze coming in from the ocean.Cliff
7x35 and 10x50 sears tower binocs, 3" f/10 edmunds reflector, 2.4" f/11.7 manon refractor, 6" f/8 jaegers refractor, 10" f/11 R30 Istar refractor, 3" f/15.8 sans&streiffe refractor, 3.1" f/15 selsi refractor(towa 339), 2.4" f/15 sears refractor, selsi 30x30mm spyglass, criterion 5-draw 25x45x75x spyglass(1957), 4.25" f/14.8 tasco 20te.http://cleardarksky.com/c/OmahaNEkey.html
Quote:I have been cleaning camera lenses for years though I am not as particular about those as I will be with the Tec. My concern though is if there should be oil along the edge. That is where I saw the oil streak that at first looked like it could be a scratch. But in wiping it and getting close to the edge I think I got oil on the cloth and this is why it spread to most of the surface as I kept wiping trying to get it clear. It didn't look so bad until I put the objective on and shined a light down. You could see the obvious smear marks then. But with the oil along the edge I wonder if it is leaking or if this is normal for an oiled lens. That I don't know.
Quote:Thanks Harvey for the recommendations. I haven't seen that one mentioned before. I already ordered Eclipse so I am going to try that but I also just ordered some OPTO-WIPES which is supposedly what Roland of AP uses. They are more absorbent than the Pec Pads which I also ordered. Some said the Pec Pads just moved the oil around because it doesn't absorb so I thought I would try both.
“I am the only person to ever ace a 1951 USAF resolution test. My 'to observe' list says 'done'. I do not use charts or atlases when I starhop; men do not use maps. One of my sketches won an SBIG deep sky imaging contest. I am the life of star parties I have never attended. I never say anything looks like a faint fuzzy - not even a faint fuzzy. Pilots aim green laser pointers at me. Don Pensack proofreads my CN forum posts.” - The Most Interesting Astronomer in the Universe