Yay i finally got my baby fixed :) - Page 2

erick (Eric) · #21 23-06-2008, 06:04 PM

Quote:

Originally Posted by Jen

Oh and getting a cooling fan well it cant get much colder out there lol my scope is left outside all day and night under my verandah

This is serious business! You are corrupting us, wanting to giggle all the time!

It is argued that leaving the cooling fan on all night (until batteries run out anyway!

) provides a steady flow of air up the tube (if your fan blows - which is the only thing a fan should do!!), reducing the likelihood of dew formation on the primary and maybe on the secondary mirror. So far in my experience, I think it seems to, but folks will argue yes and no!

Jen · #22 23-06-2008, 06:15 PM

Quote:

Originally Posted by erick

This is serious business! You are corrupting us, wanting to giggle all the time!

It is argued that leaving the cooling fan on all night (until batteries run out anyway!

) provides a steady flow of air up the tube (if your fan blows - which is the only thing a fan should do!!), reducing the likelihood of dew formation on the primary and maybe on the secondary mirror. So far I think it seems to, but folks will argue yes and no!

lol @ corrupting u

ok does it hurt to put a blanky over my tube to keep it warm or is that a no no too

AstralTraveller (David) · #23 23-06-2008, 07:32 PM

Quote:

Originally Posted by Jen

Hey there Astral i was wondering that but the inside of my tube is already black the light seems to come from those 4 thingys that hold the secondry mirror in place

Oh and getting a cooling fan well it cant get much colder out there lol my scope is left outside all day and night under my verandah i have managed to get in touch with Iceworks the guy wif the 20inch

he lives near me

so i might get him to show me what to do cheers Thanks Astral

Oh dam it i wanted to be funny

do we have a humor thread in here cause i like a giggle every now and again its good for ya

Your tube isn't as black as it seems, especially at shallow angles. Point the scope at a fairly blank area of the sky and shine a torch down the tube so that it misses the mirror and the vanes of the spider (the 'thingies') while looking in the eyepiece. See what I mean?

The issue with cold is the difference in temperature between the air in the tube and the mirror. The mirror should be within 1-2C of the air. Trouble is the air cools much quicker at night than the mirror can. Hence you get thermals in the tube. In large scopes the mirror will never keep up with the falling air temperature all night without some help. For a 15cm scope it should get to equilibrium but it still takes a while.

Humour sometimes surfaces in the General Chat section but, of course, I would never partake of such friviolities. Never, never, I promise.

Jen · #24 24-06-2008, 08:32 AM

Quote:

Originally Posted by AstralTraveller

Humour sometimes surfaces in the General Chat section but, of course, I would never partake of such friviolities. Never, never, I promise.

renormalised (Carl) · #25 24-06-2008, 10:13 AM

Quote:

the light seems to come from those 4 thingys that hold the secondry mirror in place

Jen, there's a proper term for those 4 thingies... it's franglesnyder (singular) and franglesnyders (plural)

erick (Eric) · #26 24-06-2008, 10:27 AM

Quote:

Originally Posted by renormalised

Jen, there's a proper term for those 4 thingies... it's franglesnyder (singular) and franglesnyders (plural)

I thought plural was "les franglesnydii"

Jen · #27 24-06-2008, 08:31 PM

Quote:

Originally Posted by renormalised

Jen, there's a proper term for those 4 thingies... it's franglesnyder (singular) and franglesnyders (plural)

thanks Renormalised i was wondering what those thingys were called

renormalised (Carl) · #28 24-06-2008, 08:54 PM

And those other thingies you use to collimate your scope with are groobleswonkers

Jen · #29 24-06-2008, 08:57 PM

Quote:

Originally Posted by renormalised

And those other thingies you use to collimate your scope with are groobleswonkers

now i think u are pulling my leg i will go to a star party one day and call them that and they will think what are you on woman

and i will be like renormalised told me to call them that

renormalised (Carl) · #30 24-06-2008, 09:08 PM

Quote:

now i think u are pulling my leg

My arms aren't that long

Jen · #31 24-06-2008, 09:24 PM

Quote:

Originally Posted by renormalised

My arms aren't that long

Ric · #32 24-06-2008, 09:28 PM

Quote:

Originally Posted by renormalised

Jen, there's a proper term for those 4 thingies... it's franglesnyder (singular) and franglesnyders (plural)

I always thought they were the Flintle Woodly Bits.

Jen · #33 24-06-2008, 09:30 PM

Quote:

Originally Posted by Ric

I always thought they were the Flintle Woodly Bits.

Now ya really confusing me

Ric · #34 24-06-2008, 09:36 PM

Sorry Jen my mistake, they are the bits to align the finderscope.

Jen · #35 24-06-2008, 09:44 PM

Quote:

Originally Posted by Ric

Sorry Jen my mistake, they are the bits to align the finderscope.

Yeah those things

renormalised (Carl) · #36 24-06-2008, 10:32 PM

The furgledangsprong is the little dance you do when you see something for the first time and it blows your mind away

Jen · #37 24-06-2008, 10:58 PM

Quote:

Originally Posted by renormalised

The furgledangsprong is the little dance you do when you see something for the first time and it blows your mind away

AstralTraveller (David) · #38 25-06-2008, 12:29 AM

Quote:

Originally Posted by renormalised

The furgledangsprong is the little dance you do when you see something for the first time and it blows your mind away

I thought it was a fungus. Oh well, same diff.

AstralTraveller (David) · #39 25-06-2008, 12:38 AM

[quote=AstralTraveller;338916]Your tube isn't as black as it seems, especially at shallow angles. [/quote]

Sorry Jen, I think I mislead you, sort of. I still say you will have reflections off the tube, but if the 'stripes' you mention are at 90 degree then, yes, it is from you spider. You should see this on any bright star when centred. With the moon they may even be visible before the moon is in view. Your spider vanes also aren't black enough. Trouble is that applying flocking will only make the vanes thicker and more of a problem. Very black paint is probably the only way to improve things (you will never eliminate it). The type of paint is on the forum somewhere.

Cheers,
Dave

Jen · #40 25-06-2008, 09:43 PM

[quote=AstralTraveller;339408]

Quote:

Originally Posted by AstralTraveller

Your tube isn't as black as it seems, especially at shallow angles. [/quote]

Sorry Jen, I think I mislead you, sort of. I still say you will have reflections off the tube, but if the 'stripes' you mention are at 90 degree then, yes, it is from you spider. You should see this on any bright star when centred. With the moon they may even be visible before the moon is in view. Your spider vanes also aren't black enough. Trouble is that applying flocking will only make the vanes thicker and more of a problem. Very black paint is probably the only way to improve things (you will never eliminate it). The type of paint is on the forum somewhere.

Cheers,
Dave

Hey Dave thank you for sharing your knowledge i might look into that cheers there is a lot of helpful people around here i wish i found this site much sooner cheers