7 Leonis 

 
Paolo Morini / Ilario Melandri
Star: 7 Leonis  
Date & Time: 20 march 1999, 21:55 local time 
Seeing: 8 <1-10 Seeing Scale (10 best)> 
Location of site: Monteromano - Ravenna - Italy 
Site classification: Rural  
Sky darkness: 5 worsening - fair transparency  <Limiting magnitude> 
Telescope: Takahashi FS102 
Magnification: 164x - LE5 Tak eyepiece   
 		 The star was located with a Vixen Stellar Guide. We oberved a reddish and greenish coloration (warm and cold color contrast). 
 
 
 
 
 
William L. Schart
Star: 7 Leonis  
Date & Time: 4/21/99 10:31 pm CDT 
Seeing:  7 <1-10 Seeing Scale (10 best)>  
Location of site: Killeen, TX (Lat 31 N, Elev 600 ft)  
Site classification: Suburban  
Sky darkness: 3.5 <Limiting magnitude>  
Telescope: Orion 6" Dob.  
Magnification: 32x, 98x 

Star: 7 Leonis 
Date & Time: 3/27/00  
Seeing: 6 <1-10 Seeing Scale (10 best)>  
Location of site: Killeen, TX (Lat 31 N, Elev 600 ft)  
Site classification: Suburban  
Sky darkness: 4 <Limiting magnitude>  
Telescope: Orion 6" Dob.  
Magnification: 32x, 98x 
  

 Finally located this after several nights of trying.. Is part of a 5 star asterism I call “triangle and 2.” 7 & SAO 98683 fom the 2, while 98704, 98696, & 98687 from the traingle. All this found by hopping from o Leonis.  Can be split with 32x. Separation 43”, PA 87d. Primary bluish white, while the secondary seemed more blulish. 
 
 
 
 
 
 

 
 
A wide spaced double withy quite a difference in magnitude. The primary appeared blue but the secondary was too fainat to tell color. PA measured at 80d, separation at 40" 

There were 2 other pairs visible in the same FOV. One I have tentatively identified as STT 102. The ID was made by using the freeware program "Ciel" and the WDS catalogue info downloaded from the same site (http://www.stargazing.net/astropc/download.html). 
 
 
 
Tollefsen Magne 
Star: 7 Leonis  
Date & Time: February 28, at 22,50 UT  
Seeing: 6 <1-10 Seeing Scale (10 best)> 
Location of site: Skien, South-East of Norway  
Site classification: Suburban  
Sky darkness: 4.5 <Limiting magnitude>  
Telescope: Vixen 120mm 4 elements refractor 
Magnification: 20x 
  
 		 The stars were easily split at 20X. The separation was found to be 41,4 arcsec, and the position angle 79 degree. 
 
 

 
 
 
 
Eddy O'Connor
Star: 7 Leonis 
Date & Time: March/3/2000, 10 p.m. local(UTC+11) 
Seeing: 9 <1-10 Seeing Scale (10 best)> 
Transparency: 8/10 
Location of Site: Nowra, New South Wales, Aussieland (Australia):150.37 long/34.52S lat. 
Site Classification: with most house lights 
out and heavy snores! 
Sky darkness: 6 <Limiting magnitude> 
Temperature: 21C 
Telescope: Dob 8", F9, eyepieces, 25mm 
and 12.5mm ortho. 
Magnification: 73x, 146x 
 		 This star a little tricky to find at first but a westerly line along the Ecliptic from Regulus and past Psi Leo(somewhat brighter)soon had this double gem in the eyepiece. I found the 6.33 primary an ultra-light blue with a marked brightness contrast to its 9.48 grey companion at 41.2", P.A. 80o(WDS cat.). 
 
In the same field and about 14' NE is a more closely balanced double of mag. 8.7 and 9 stars at a wide 83". (Several hours later when Leo was at culmination I just split Leo 7 in 25X100 binocs and noticed the primary a cobalt blue(Night-eyes?Optics?). 
 
Ambience: Noticed Hubble pass at a dim 2.5 mag below Orion and enjoyed 
again R Leo, my favourite variable, in close proximity to Leo 7 in its isosceles triangle. The cold change arrives soon so cloud for some nights.May the search continue! 
 
 
 
Philippe de Jocas 
Star: 7 Leonis   
Date & Time: March 13, 2000   
Seeing: 8 <1-10 Seeing Scale (10 best)>. 
Location of site: Ottawa/Hull, Canada 
Site classification: Suburban  
Sky darkness: 4.4-4.5 <Limiting magnitude> 
Temperature: ~ 0C 
Telescope: 6" f5 newtonian 
Magnification: 90x 

 

 7 Leo and O. S. Struve 102 were altogether easy at 90x making a nice field. 
 
 
 
Ilario Melandri
Star: 7 Leonis  
Date & Time: 30 Mar 2000 – 19.50 UTC  
Seeing: 7 <1-10 Seeing Scale (10 best)>  
Location of site: Italy, Ravenna, San Romualdo, Lat 44 32’N Lon 12 08’E 
Elevation: 0 m 
Site classification: Rural  
Sky darkness: 6 <Limiting magnitude> 
Temperature: +7C 
Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice) 
Magnification: 140 x (eyepiece Plossl Clavé 16 mm) 
 		  
 
 
 
Rafaello Braga 
Star: 7 Leonis 
Date & Time: 03.05.2000, 21.00 UT 
Seeing: 7 <1-10 Seeing Scale (10 best)> 
Location of Site: Corsico, Italy 
Site Classification: suburban 
Sky darkness: poor, veils, 3  <limiting magnitude> 
Telescope: 75mm (3") f/6.7 Pentax apo refractor 
Magnification: 75x (Plossl 6.7 mm)		 Comes is difficult with poor transparency (mag 9.5). A pale blue. 20' SSW there is STT 102, more easy to see at same power (7.9 - 9.1 - 43° - 48.2 arcsec) but too faint to see colors.