Showing posts with label Astronomical League Double Star List. Show all posts
Showing posts with label Astronomical League Double Star List. Show all posts

Thursday, September 10, 2015

Uranus and two Astronomical League Double Stars /Uranus si doua stele duble din lista AL

Uranus (center) ,to the S - SE of Zeta Pisci ,on 30 August 2015 in the ''zoth'' 60 x 828 mm
DIY refractor at 33 x / Sirius Plossl 25 mm.
The planet was found first in the 7x50mm ''Mariner '' Fujinon  binocular using the printable version of this ''Sky&Telescope'' map:

http://www.skyandtelescope.com/observing/celestial-objects-to-watch/uranus-and-neptune-in-2015/


A closer look to Uranus using the same ''zoth'' 60 x 828 mm DIY refractor T 207 x ,Kasai 4 mm ocular: a puffy ,very small disc of bluish-grey color in nice contrast with the yellow or light orange star located further to S - SE.

57 Aquilae in the 60 x 828 mm refractor ,easy pray at 33x / Plossl 25 mm.
Look carefully ,to the S -SE there is a much dimmer double star ,about 20% wider
than 57 Aql and with the companion located at PA = 280 degree.


Alpha Capricorni ,a composite view.
In the 60 x 828 mm refractor at 65 x / Solid Simetric 12.8 mm ocular ,
 there are visible the two main bright stars ,located  at PA = 290 degree;
and two really dim companions ,one at PA = 210 deg. and the other at PA = 150 deg.
In the 125mm F/7 Newtonian reflector I noticed a fifth companion ,closer to the bright main star and located at about PA = 290 degree , to the Est of the multiple star system.




Wednesday, February 19, 2014

ASTRONOMICAL LEAGUES DOUBLE STAR LIST through my 60mm refractor

I'm embarked in a journey through the  AL Double Star List using my 60mm F=700mm refractor.
The recently finished 1.5 inch pipe-mount and the home-made clam shell are of great help.
To find the double stars I follow the instructions written by Bill Steen ,fellow of the ''60mmtelescopeclub''.
I'm already in the second half of this well known observational program.

Last night night,on Tuesday 18-th of February I observed ,meaning find and split the following stars:
Kappa Puppis
Alpha Leonis
Gamma Leonis
54 Leonis
The highest magnification used was 78x ,obtained with a 9mm Vixen Orthoscopic ocular.
An 1.25 inch ''Teleskop Service'' diagonal was used for better ergonomics ,my ex-military 8x30mm IOR binocular for scouting the sky and the ''Pocket Sky Atlas'' for detailed maps.
My 60x700mm refractor , Bushmaster lens ,Omegon tube and 1.5 ''  pipe mount

Double star 54 Leonis,split at 78x / 9 mm orthoscopic ocular
                      

             Gamma Leonis or Algieba is a gem,split at 78x / 9mm Vixen orthoscopic but seen as two kissing spheres at 32 x /home-made 22 mm Ramsden ,nicknamed ''Aristotel''.
Kappa Puppis,easy find following Bill's instructions ,split at 78x.

Another double star was Alpha Leonis who's companion was already visible in the home -made 22 mm Ramsden ocular at 32 x but the 9mm ortho was of great help.