|
|
|||||||
|
|
|
Thread Tools | Display Modes |
|
#1
June 18th 04, 08:14 AM
|
|||
|
|||
Good Reference
Is there some good reference stars to determine how well my refractor
performs in terms of how many stars I should see under good seeing? For instance I am looking at the vacinity of Mizar at 35 power with my 80mm achromat. What is the best and worst I should see? How many stars should I be able to see? 
|
|
#2
June 18th 04, 02:59 PM
|
|||
|
|||
|
Good Reference
Try to split Izar (Epsilon Bootes); that is a close double high in the
sky at this time of year. It is my personal favorite double star. Matthew Ota UncoBiwie wrote: Is there some good reference stars to determine how well my refractor performs in terms of how many stars I should see under good seeing? For instance I am looking at the vacinity of Mizar at 35 power with my 80mm achromat. What is the best and worst I should see? How many stars should I be able to see?
|
|
#3
June 18th 04, 02:59 PM
|
|||
|
|||
|
Good Reference
Try to split Izar (Epsilon Bootes); that is a close double high in the
sky at this time of year. It is my personal favorite double star. Matthew Ota UncoBiwie wrote: Is there some good reference stars to determine how well my refractor performs in terms of how many stars I should see under good seeing? For instance I am looking at the vacinity of Mizar at 35 power with my 80mm achromat. What is the best and worst I should see? How many stars should I be able to see?
|
|
#4
June 18th 04, 03:14 PM
|
|||
|
|||
|
Good Reference
"Matthew Ota" wrote in message ... Try to split Izar (Epsilon Bootes); that is a close double high in the sky at this time of year. It is my personal favorite double star. Matthew Ota What is the arc second separation?
|
|
#5
June 18th 04, 03:14 PM
|
|||
|
|||
|
Good Reference
"Matthew Ota" wrote in message ... Try to split Izar (Epsilon Bootes); that is a close double high in the sky at this time of year. It is my personal favorite double star. Matthew Ota What is the arc second separation?
|
|
#6
June 18th 04, 03:52 PM
|
|||
|
|||
|
Good Reference
Hi Mick
|
|
#7
June 18th 04, 03:52 PM
|
|||
|
|||
|
Good Reference
Hi Mick
|
|
#8
June 18th 04, 05:50 PM
|
|||
|
|||
|
Good Reference
What is the arc second separation? According to Cartes du Ciel" Epsilon Bootes is about 2.9 arc-second separation with magnitudes of 2.58 and 4.81. It is a nice double because of the difference in brightness but not particularly difficult. jon
|
|
#9
June 18th 04, 05:50 PM
|
|||
|
|||
|
Good Reference
What is the arc second separation? According to Cartes du Ciel" Epsilon Bootes is about 2.9 arc-second separation with magnitudes of 2.58 and 4.81. It is a nice double because of the difference in brightness but not particularly difficult. jon
|
|
#10
June 18th 04, 09:32 PM
|
|||
|
|||
|
Good Reference
"Jon Isaacs" wrote in message ... What is the arc second separation? According to Cartes du Ciel" Epsilon Bootes is about 2.9 arc-second separation with magnitudes of 2.58 and 4.81. It is a nice double because of the difference in brightness but not particularly difficult. jon I can just split Castor A-B
|
|
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Sedna, space probes?, colonies? what's next? | TKalbfus | Policy | 265 | July 13th 04 12:00 AM |
| UFO Activities from Biblical Times (LONG TEXT) | Kazmer Ujvarosy | SETI | 2 | December 25th 03 07:33 PM |
Linear Mode
