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  #81  
Old 02-10-2009, 09:23 PM
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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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  #82  
Old 02-10-2009, 09:26 PM
dpastern (Dave Pastern)
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Quote:
Originally Posted by shane.mcneil View Post
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.
doh!!!! no damage I hope?

Dave
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  #83  
Old 02-10-2009, 10:53 PM
StarGazing (Alex)
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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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  #84  
Old 03-10-2009, 02:03 AM
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MrB (Simon)
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Ouch... but... who left them where they could be stepped on?
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  #85  
Old 03-10-2009, 05:58 AM
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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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  #86  
Old 03-10-2009, 09:33 AM
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seanliddelow (Sean)
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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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  #87  
Old 03-10-2009, 10:07 AM
dpastern (Dave Pastern)
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Quote:
Originally Posted by shane.mcneil View Post
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
I know what you mean. I'm a practiced expert at it lol.

Dave
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  #88  
Old 03-10-2009, 02:52 PM
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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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  #89  
Old 03-10-2009, 04:56 PM
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multiweb (Marc)
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Classic ...
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  #90  
Old 03-10-2009, 11:06 PM
StarGazing (Alex)
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Quote:
Originally Posted by MrB View Post
Ouch... but... who left them where they could be stepped on?
Me Simon, stupid me
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  #91  
Old 04-10-2009, 06:43 PM
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Lumen Miner (Mitchell)
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Me Simon, stupid me
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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  #92  
Old 12-10-2009, 03:46 AM
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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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  #93  
Old 12-10-2009, 08:18 AM
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Quote:
Originally Posted by bartman View Post
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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  #94  
Old 12-10-2009, 10:53 AM
p3nn (James)
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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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  #95  
Old 12-10-2009, 09:35 PM
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Jen starts chanting for more DOH'S
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  #96  
Old 12-10-2009, 10:10 PM
dpastern (Dave Pastern)
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doe...dough

You did ask for it Jen

Dave
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  #97  
Old 12-10-2009, 10:41 PM
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Quote:
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doe...dough

You did ask for it Jen

Dave
Haha cheeky bugger i was waiting for that
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  #98  
Old 12-10-2009, 11:28 PM
dpastern (Dave Pastern)
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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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  #99  
Old 13-10-2009, 12:01 AM
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Octane (Humayun)
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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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  #100  
Old 13-10-2009, 06:27 AM
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multiweb (Marc)
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Quote:
Originally Posted by Octane View Post
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
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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