A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Others » Misc
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

newbie questions



 
 
Thread Tools Display Modes
  #1  
Old August 26th 03, 05:46 PM
Dave
external usenet poster
 
Posts: n/a
Default newbie questions

since im anewbie, i have an etx 70 that my wife bought for me

with the 25mm eyepiece , mars is a pinhead
with the 9mm its a 3/32" size
with the 4mm its a blurry 1/8"

i guess im under whelmed, because yes the 25 mm is the sharpest image, but
its a pinehead, and uhhhhhhhhh, well, even with perfect eyesite, you dont
see much more than a red dot of light

so, question is?
larger scopes, do they produce larger images in the eyepiece?
i see all these wonderful pictures on the net, of detailed nebula, and star
clusters and such, but, im not seeing them.....................

looks like the etx70 will be gathering dust, or looking at the neighbors
wife (lol)

dave


  #2  
Old August 26th 03, 09:08 PM
Fred Williams
external usenet poster
 
Posts: n/a
Default

Dave wrote:

since im anewbie, i have an etx 70 that my wife bought for me

snip
so, question is?
larger scopes, do they produce larger images in the eyepiece?

snip
I presume thats a 70 mm aperture. Hmmm. Not going to do much for
you, but some people only start with naked eye observing and others
just use binoculars. The resolution, (or "sharpness" of the primary
image), is related directly to the size of the objective lense,
assuming the optics are reasonable quality. So the "size" of the
scope is important for what you want to see.
The other thing to consider is educating yourself about what you want
to look at. What you get out of an observing session is directly
related to how much you know about what you're observing, and what
you want to find.
I've been out of the astromony scene for some years, (decades
really), so I'm no expert, but you might want to try your 70 out on
lunar observing or some brighter extended objects. Read up on the
target ahead of time check the star charts for it's location. Learn
the "skymarks," (like "landmarks" but...), and plan for when it will
be visible in your area. Be patient with finding the thing, (that's
half the fun). (Well OK, the moon shouldn't be that hard to find,
but some targets will be more so).
In time you'll want a better scope, but stay away from the dime-store
wonders, and check the new telescope buyers FAQ at

http://home.inreach.com/starlord

Best of luck with it.

--
Regards
Fred

Remove FFFf to reply, please
  #5  
Old September 2nd 03, 01:34 PM
Robocoastie
external usenet poster
 
Posts: n/a
Default

Dave wrote:

since im anewbie, i have an etx 70 that my wife bought for me

with the 25mm eyepiece , mars is a pinhead
with the 9mm its a 3/32" size
with the 4mm its a blurry 1/8"

i guess im under whelmed, because yes the 25 mm is the sharpest image, but
its a pinehead, and uhhhhhhhhh, well, even with perfect eyesite, you dont
see much more than a red dot of light

so, question is?
larger scopes, do they produce larger images in the eyepiece?
i see all these wonderful pictures on the net, of detailed nebula, and star
clusters and such, but, im not seeing them.....................

looks like the etx70 will be gathering dust, or looking at the neighbors
wife (lol)

dave


Aye that's the same problem I have with my ETX-60. I have heard that a
2x Barlow lens will help a little for planetory observing though. But
overall it seems these lil scopes are better suited for deep sky
observing; whereas the big dob cannons are the ones to use for planets.

 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Newbie Questions Frodo Amateur Astronomy 12 March 8th 04 05:08 PM
newbie questions on solar observing Zhen Jie Amateur Astronomy 2 March 8th 04 01:05 AM
Newbie Questions: 12" LX200GPS [email protected] Amateur Astronomy 77 September 8th 03 04:42 AM
Three newbie questions Mike Walker Space Shuttle 31 September 5th 03 09:04 AM


All times are GMT +1. The time now is 11:52 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.