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  1. #1
    Nodgiles's Avatar
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    Default Set my expectations?



    With the wonderful help of this forum I am getting my first telescope. I have always been fascinated with astronomy and finally have the resources to start the hobby. With the help of this forum and countless hours of research I have picked up the following items.

    Sirius EQ-G Mount with GoTo control - from telescope.com
    Zhumell 1.25 Inch Eyepiece and Filter Kit - from telescopes.com
    Lumicon 1.25 Inch Deep Sky Filter - from telescopes.com

    I was going to purchase a scope to go with it all but have an acquaintance that is going to let me have his old celestron astromaster scope. It has an aprature of 114mm and a focal length of 1000mm. I know from doing research that this scope is not all that great but as a beginner, itll get me started until I can make an educated decision on what to purchase myself. Plus its free! Cant beat that!

    Can anyone set an expectation for me on what types of things Ill be able to see with this setup? For example, what will orions nebula look like through this scope? I know its not going to be anywhere close to anything I can find on the net, but can someone set an expectation? Size, clarity, color?

    Many thanks!
    -Leith

  2. #2
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    Hi Leith

    Mate you didn't mess around with the mount! That baby will carry an 8" scope if you want it too.

    The 114mm x 1000 is probably going to give you more joy with the moon and planets than anything else, but there are plenty of larger bright DSOs out there as well.

    Have a look at the sketches here

    Astronomy Sketch of the Day

    Most will say the size of the scope used, and will give you a more realistic idea of what you will see

  3. #3
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    Default

    Howdy Nodgiles,

    You'll see some great images on that site Vin suggested. Here's one of Orion with a 114mm Synta Newtonian:

    Astronomy Sketch of the Day Wide Field Orion

    That's great you have a friend willing to pass on his equip to a new person! What a great idea, but I would bet most folks tend to hang on to it more often than not.

    Mike - (Doesn't even know anyone with a scope..)

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    Great stuff! Im going to hit up many nights of star gazing and an occasional star party before purchasing a new scope. Ive been looking at refractors and see them averaging only 80-100mm apertures costing as much or more than reflectors with 6-8 inch apertures. From what I have seen refractors are best for astrophotography, but how can this be when the apertures are so much smaller? I would really like a good all around scope, for viewing planets, but I would also like to get some shots of nebula. What is the best solution for this? What is the most cost efficient way to get color out of nebula, or am I missing something? When people post pictures on the net and say they used color correction, does that indicate that the image has had color added to it? I see a lot of amateur astronomy photos out there with great color in orions nebula, yet I read many posts about people not being able to see color, or only getting a slight haze of color. It all seems sort of contradictory.

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    Don't expect to see color in nebulae.
    A camera and your eye work very differently in dim light. The color receptors in your eye just don't work. Think of a moonlit scene. You see no color but the scene is lit by sunlight reflected off the moon so they're still there.

    OTOH, the camera sees intensities of red light, green light and blue light regardless of the overall brightness. Nebulae like Orion emit their light at specific wavelengths (a particular red and a particular blue) which is what the camera can take a picture of.

    However, the camera can't replicate the view that you see. Your eye/brain can cope with the bright stars set against the dim filaments of the nebula and the camera can't do that.

    So, while there are some stunning photographs of M42, they can't capture the view that you get through a telescope.

    Steve.
    "Oh no! Not another !@#$% hobby" - The wife.

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    ok great, i will be dabbling in some astrophotography so hopefully Ill be able to pull some images in color. Is the method described here required or can the camera pull the color alone?

    Mike's Astrophotography Web Page - Tri-Color Astrophotography

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    Woot! Just got my stuff delivered from fedex, Im so excited! Darn rain clouds. . .

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    Quote Originally Posted by Nodgiles View Post
    Woot! Just got my stuff delivered from fedex, Im so excited! Darn rain clouds. . .
    It's the Curse of New Equipment Purchase. You have to pay your dues now, and other observors within 50 miles will throw onions in your direction.

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    Quote Originally Posted by Nodgiles View Post
    ok great, i will be dabbling in some astrophotography so hopefully Ill be able to pull some images in color. Is the method described here required or can the camera pull the color alone?
    That would be jumping right in at the deep end.

    You can start off much simpler using the piggy back method where you put your camera on top of the telescope. This is M42 from a Canon S3IS point and shoot camera using that method. The camera can only do 60 second exposures and this is from 3 exposures.



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    So your telling me you were able to pull that image using just the camera? I thought one would need to use the telescope as the lens in order to pull off a deep space image like that.

 

 
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