Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

stargazine_ep33_banner.thumb.jpg.75d09b4b1b4e5bdb1393e57ce45e6a32.jpg

bmcentee148

New Members
  • Content Count

    11
  • Joined

  • Last visited

Community Reputation

0 Neutral

About bmcentee148

  • Rank
    Nebula

Profile Information

  • Location
    New York
  1. Thank you all for your responses and putting me in the right direction!
  2. Then in order to aim at a star given its declination and R.A. , which one of the 60 degree marks is the one that will allow me to turn to the GIVEN R.A. from the star atlas instead of having the rotate it 12 hours ( 180 degrees ) around? And thank you this is much more along the lines of what I was asking.
  3. R.A. has unique setting circles. Its like a clock that runs 24 hours, so each setting on my R.A. circle will be unique. My problem is the declination setting circles have two 90 degrees, one positive and one negative for north and south. It then has 4 different 60 degree lines 4 different 50 degree lines etc. How do I know which one of these declination settings to use when given star coordinate? R.A. will be easy since it is always unique but this is NOT THE CASE WITH DECLINATION!
  4. And I understand that its not going to work correctly, I just want to know how it would be done in THEORY.
  5. I appreciate all the answers but like... no one is actually answering my question. How do I know which 60 degrees on the the declination setting circle? There are two positive and two negative making a total of four choices.
  6. Then why can I lock my declination at any one of these two positive 60 degrees and rotate completely around in R.A.? It seems to me there would be stars in my field the entire time and I am rotating around 24 hours in two different points designated the same positive declination. In my head, two stars would then end up with the same declination and Right Ascension according to my dials.
  7. Then I am sorry but my question still stands. How does the celestial coordinate system tell me which positive 60 degrees to turn my telescope (left or right) to look in the direction of my target object of declination positive 60 degrees and an arbitrary Right Ascension?
  8. Thanks a lot for your responses. I am currently learning to navigate my way around the night sky with the naked eye and understand that using the setting circles to actually locate objects but was more wondering how it should work in theory. For instance, if there are two positive 60 degrees one in the east and on the in the west then it seems to me two stars could have the same given "position" in declination and R.A. but be on opposite sides of the meridian. Then it truly isn't a way to uniquely identify positions of stars in the sky is it?
  9. Yes, I have watches both of these videos previously and like I said in the post, understand this information. My question pertains to how to theoretically aim at specific stars after polar aligning and calibrating the setting circles on the mount. If I am given the coordinate of a star that that is at + 60 degrees declination and my scope is now aimed at the celestial pole ( + 90 degrees declination) which way do I turn my scope for the CORRECT +60 degrees. There are a total of FOUR 60 degrees on the declination circle, two positive and two negative.
  10. I recently bought a reflector telescope with an equatorial mount and have done the research into how to balance, polar align, etc. I initially I thought I understood how declination worked with south of the celestial equator being deemed negative and those north deemed positive. But when a star is say at + 70 degrees declination and I have my telescoped aimed at the celestial pole, I don't understand which way to turn the telescope. Left or right? either way I can have the telescope point at + 70 declination it appears to me. Then if I move to the star addresses R.A, it seems I would be looking at two entirely different sections of the sky with my choice. Any help would be greatly appreciated!
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.