K-Tec

alignment of scope.. daylight savings 'on' or 'off'

  • Frank Ryan
  • Topic Author
  • Offline
  • Super Giant
  • Super Giant
More
18 years 4 months ago #31817 by Frank Ryan
no matter how many times....
daylight savings on or off...
my goto always places the object 15-20deg. left and low of thr eyepiece....
I may sound dumb but at this stage I dont care......
are we 'in' daylight savings time or not?


:oops:

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

Please Log in or Create an account to join the conversation.

More
18 years 4 months ago #31818 by Seanie_Morris
We are in Daylight Savings Time, would you believe... I always thought it was during Winter... DST = British Summer Time.

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

Please Log in or Create an account to join the conversation.

  • DaveGrennan
  • Offline
  • IFAS Astronomer of the Year 2010
  • IFAS Astronomer of the Year 2010
More
18 years 4 months ago #31820 by DaveGrennan
I assume from your avatar that you are talking about a meade etx70?

If it is anything like the celestron scopes the date format is american mm/dd/yy maybe this is the problem? That would be about right if you entered 05/08/06 the scope would take that as May 8th instead of August 5th.

Until the 29th October we are in daylight savings time. But if you want you can forget that. Leave DST off and just take one hour off the current local time. However 1 hour would not account for 15deg of a difference.

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

Please Log in or Create an account to join the conversation.

  • Frank Ryan
  • Topic Author
  • Offline
  • Super Giant
  • Super Giant
More
18 years 4 months ago #31821 by Frank Ryan
mmmmm. ok..
well its an etx 125 but that may still be the prob...
tanx.

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

Please Log in or Create an account to join the conversation.

More
18 years 4 months ago #31823 by dmcdona

However 1 hour would not account for 15deg of a difference.


Dave - my knowledge of the intricacies of celestial movements is not great but if we rotate 360 degrees in 24 hrs, surely one hour in time is equivalent to a 15 degree movement? I get the same issue with the AP if I get my DST or UTC wrong by an hour - approximately 15 degree misposition.

Of course, the pole star doesn't move 15 degrees in an hour so presumably it only applies to objects along the celestial equator and decreases as you move toward the poles.

I may have this completely wrong though :D

Cheers

Dave

Please Log in or Create an account to join the conversation.

More
18 years 4 months ago #31824 by Seanie_Morris
Dave Mac is right, but it is the stars along the celestial equator that will move 'visibly' 15 degrees to the right each hour.

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

Please Log in or Create an account to join the conversation.

Time to create page: 0.118 seconds
Powered by Kunena Forum