ICEINSPACE
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Moon Phase
CURRENT MOON
Waning Gibbous 99%
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02-10-2009, 10:23 PM
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Registered User
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Join Date: Aug 2009
Posts: 172
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Making sure my lens cap was on during the dust storm, only to find out later that I didn't have an eyepeice in the focuser. It was completely open.
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02-10-2009, 10:26 PM
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PI cult member
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Join Date: Jan 2009
Location: Brisbane
Posts: 2,874
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Quote:
Originally Posted by shane.mcneil
Making sure my lens cap was on during the dust storm, only to find out later that I didn't have an eyepeice in the focuser. It was completely open.
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doh!!!! no damage I hope?
Dave
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02-10-2009, 11:53 PM
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Registered User
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Join Date: Sep 2009
Location: Melbourne, Australia
Posts: 163
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Stepping on my brothers brand new Nikon binos one night. Cracked the lenses, he was not a happy chappy  . Not to mention it cost me $$$$ when I could have used the $$$$ for EP instead. 
Alex.
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03-10-2009, 03:03 AM
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Old Man Yells at Cloud
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Join Date: Jan 2007
Location: Rockingham WA
Posts: 3,435
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Ouch... but... who left them where they could be stepped on?
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03-10-2009, 06:58 AM
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Registered User
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Join Date: Aug 2009
Posts: 172
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It seems to be OK Dave. Perhaps the air pressure difference kept the dust out. I just felt like a twit when I realised.
Shane
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03-10-2009, 10:33 AM
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Astro-Addict
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Join Date: Jun 2009
Location: Perth, Western Australia
Posts: 633
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Leaving my dust cap on in my new Skywatcher 305mm Dobsonian. I took the little 40mm cap off but the rest of the dust cap was on ......... Instead of observing in a 305mm Dob I was observing with 40mm highly magnified el cheapo dob  ..... After 2 months I finally found out what was wrong, just in time for dark skies 
Learn from my stupidity.......
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03-10-2009, 11:07 AM
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PI cult member
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Join Date: Jan 2009
Location: Brisbane
Posts: 2,874
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Quote:
Originally Posted by shane.mcneil
It seems to be OK Dave. Perhaps the air pressure difference kept the dust out. I just felt like a twit when I realised.
Shane
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I know what you mean. I'm a practiced expert at it lol.
Dave
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03-10-2009, 03:52 PM
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Hitchhiker
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Join Date: Jan 2007
Location: Clifton Springs, Victoria
Posts: 851
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In 64 years there have been a number of Doh! moments, a largish number!
One non-astro moment that gets remembered frequently by so called 'friends', was at a camp site on a prospecting trip years ago.
We always made sure we had a good camp fire going at night, set up with a star post arrangement either side and over the fire for hanging the billy on. First night out the billy was taking forever to boil, so two us hunted around for rocks to bang the star posts down lower, took us for ever!
Eventually we got it done, then one of the wives pipes up, 'why didn't you just get a longer wire to hang the billy on?'
Oh well...
Cheers 
Chris
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03-10-2009, 05:56 PM
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ze frogginator
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Join Date: Oct 2007
Location: Sydney
Posts: 22,062
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Classic ...
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04-10-2009, 12:06 AM
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Registered User
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Join Date: Sep 2009
Location: Melbourne, Australia
Posts: 163
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Quote:
Originally Posted by MrB
Ouch... but... who left them where they could be stepped on?
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Me Simon, stupid me
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04-10-2009, 07:43 PM
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Registered User
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Join Date: Jun 2009
Location: Beecroft, Sydney
Posts: 825
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Quote:
Originally Posted by StarGazing
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Oh that does sting!! Can't even get out of it on the technicality, that it wasn't your fault... Damn... 
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12-10-2009, 04:46 AM
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1 of 7 of 9
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Join Date: Sep 2009
Location: Perth
Posts: 1,968
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This was my post just over a week ago....
Hi Guys and Girls,
I was just wondering what kind of magnification you get when attaching a dslr (Nikon d90) to a 10" Newtonian.
i have seen pics of say....Jupiter, (with all the bands, red spot and moons) and they are clear as, full screen and all done with the equipment above.
I realize filters have been used.... but I cant understand that no Barlow, eyepiece or camera lens has been used....
Or am I mistaken?
How do they/you guys do it?
Bartman
The reply was....
Bart the telescope IS the camera lens. In that case it's a 1500mm telephoto lense (quote from 1ponders)
As soon as 1ponders said that, I went DOooooH of course!
Just didn't think before i spoke
Bartman
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12-10-2009, 09:18 AM
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Registered User
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Join Date: Jun 2009
Location: Beecroft, Sydney
Posts: 825
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Quote:
Originally Posted by bartman
This was my post just over a week ago....
Hi Guys and Girls,
I was just wondering what kind of magnification you get when attaching a dslr (Nikon d90) to a 10" Newtonian.
i have seen pics of say....Jupiter, (with all the bands, red spot and moons) and they are clear as, full screen and all done with the equipment above.
I realize filters have been used.... but I cant understand that no Barlow, eyepiece or camera lens has been used....
Or am I mistaken?
How do they/you guys do it?
Bartman
The reply was....
Bart the telescope IS the camera lens. In that case it's a 1500mm telephoto lense (quote from 1ponders)
As soon as 1ponders said that, I went DOooooH of course!
Just didn't think before i spoke
Bartman |
Been there, don't worry!!
Took me a whole week to work that one out!
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12-10-2009, 11:53 AM
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Registered User
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Join Date: Jul 2009
Location: Brisbane, Australia
Posts: 50
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I've had a few myself ranging from trying to figure out why I wasn't getting an image in the neximage. Had the dustcap on.
My first collimation attempt had me seeing double of everything, i.e. 2 Jupiters and 8 moons in a line. That's when I reread the instruction and realised where I went wrong.
Also posting a Q on an astronomy forum trying to figure out why Venus had 3 moons. Turns out I didn't know the dif between Jupiter and Venus at the time
Just setup for an imaging attempt re Jupiter and as I turned to the laptop to start the capture I tripped over the tripod leg knocking the alignment out
Nothing that bad but still...........
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12-10-2009, 10:35 PM
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Moving to Pandora
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Join Date: Jan 2008
Location: Swan Hill
Posts: 7,095
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Jen starts chanting for more DOH'S
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12-10-2009, 11:10 PM
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PI cult member
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Join Date: Jan 2009
Location: Brisbane
Posts: 2,874
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doe...dough
You did ask for it Jen
Dave
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12-10-2009, 11:41 PM
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Moving to Pandora
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Join Date: Jan 2008
Location: Swan Hill
Posts: 7,095
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13-10-2009, 12:28 AM
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PI cult member
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Join Date: Jan 2009
Location: Brisbane
Posts: 2,874
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hee hee! I can just see all the other IIS members rolling their eyes at my very bad puns. That means I'm very punny!
Dave
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13-10-2009, 01:01 AM
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IIS Member #671
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Join Date: Dec 2005
Location: Canberra
Posts: 11,159
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Much like everyone else has mentioned previously...
Wondering why on Earth my DSI wasn't picking up any guide stars when pointing my guidescope to a very busy section of the Milky Way. You guessed it, dust cap!
Also, completely fudging the method of polar alignment. Practise does make perfect, though -- use it or lose it!
Regards,
Humayun
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13-10-2009, 07:27 AM
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ze frogginator
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Join Date: Oct 2007
Location: Sydney
Posts: 22,062
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Quote:
Originally Posted by Octane
Much like everyone else has mentioned previously...
Wondering why on Earth my DSI wasn't picking up any guide stars when pointing my guidescope to a very busy section of the Milky Way. You guessed it, dust cap!
Also, completely fudging the method of polar alignment. Practise does make perfect, though -- use it or lose it!
Regards,
Humayun
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More subtle... have you tried reversing the orientation of a pick up prism in an OAG so it faces the camera? Very hard to find a guide star this way too. 
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