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Subject: Re: vote by xxx.xxx.124.149 By: Anonymous (xxx.xxx.124.149) Date: 05/08/2003 02:28:48 pm PST >The "8" rating is because I had objectionable reflections off-axis on Jupiter - might just be the eyepieces, might be because I didn;t bother to use a dew shield. I'll try it again on a better night and different eyepieces and if the reflections go away I'll make a followup post. > --Followup-- I had the opportunity to try Jupiter again with different eyepieces and it turned out that those were the problem; no ghost images even without a dew shield with different oculars. Harry's gonna replace the eyepieces for me. John Subject: Re: vote by xxx.xxx.124.149 By: jrcrilly Date: 05/08/2003 04:12:32 pm PST Oops! I posted a followup to this explaining that the refections were not caused by the bino viewer but by the eyepieces I was using. I just noticed that I wasn't logged in at the time and my followup shows as "anonymous". It's me - the eyepieces were the problem! John Subject: Re: vote by xxx.xxx.202.209 By: Anonymous (xxx.xxx.202.209) Date: 01/24/2004 02:27:25 pm PST >I have owned the BNs for a few months now and I feel I can review them objectively. I have owned and subsequently returned two other binoviewers in the past, one Russian and one $1200 American unit. Both of those units showed significant color differences on one side of the unit. The Russian was deep yellow and the American was pinkish. I use apo refractors so I don't care for introducing false color to any object. The Siebert BN unit is clear and natural on both sides. The BNs provide planetary views that are breathtaking and I had the unforgetable experience of splitting Sirius on 11/15/03 in a 4" Fluorite apo. I also had the best split I have ever seen of Zeta Orionis. The only caveat I can give concerning their use in refractors is that the only way I can get them to focus in any of my three scopes, two Vixen one Synta, is two use a 2x Barlow screwed into the bottom of the unit. This arrangement limits the scope to high mags but I don't do much other than planetary and doubles with some Ha solar thrown in with the refractors so I haven't discussed a remedy with Harry. I also use the BNs with the 1.8 OCA in my 10" Newt with great success, focus is achieved easily. Once you get a look at M13 or M42 with a 10 and a pair of BNs you're spoiled for life! The Black Nights have proven to be THE BEST astro accesssory I have purchased to date and I wholeheartedly recommend them and Siebert Optics. BTW, I'm using generic 32mm and 15mm Plossls. > >Clear Skies, > >Steve Addendum: I have spoken with Harry and we came up with the solution of placing a ring on top of the diagonal to help push the binoviewers back. This allows me to now reach focus in my refractors using 2" diagonals with the 1.8 OCA. The 1.8 OCA is a very useful device that maintains the image integrity in my apos while increasing the magnification options of my existing EP collection. Thanks Harry. Clear Skies, Steve Stonehill Page 1 of 1 | ||||||||
