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Thread: Eyepiece advice

  1. #1
    John H's Avatar
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    Default Eyepiece advice



    Hi, newbie here. Recently bought a gently used 8" Schmidt/Cass, Celestron CPC 800 with Celestron 17 Power tank. Unit also came with inexpensive, Celestron 26mm and 40mm eyepieces.

    At the advice of my local Scope City store manager (nice guy), I bought a Baader 13mm, 36mm, and Lumicon 2" diaganol. Since I like looking at the moon and planets, he gave me a free moon filter and a free yellow filter for Saturn, which has been visible as of late.

    The Baader's are nice, as is the Parks 2X Barlow I picked up cheap from a local guy wanting to offload it.

    I'm a bit of a gadget/tool junkie as woodworking and motorcycling are hobbies of mine for 20 years, and I've learned the hard way to buy quality. I really liked the wider field of view and clarity I got with the Baader's over the Celestron Plossl's that came with the scope.

    So..., following my thinking, I'm trading in the Baader's (100% credit) for a Televue 36mm Panoptic, and a 13mm Ethos, and I also bought a 2X Televue Powermate. Store manager indicates that for what I'm interested in, he thinks this should take care of me for quite awhile.

    My area is fairly light polluted, so I'm not going to get a lot of good viewing out of the 13mm coupled with the 2X Powermate, except on the moon and maybe Saturn. At least, that has been my experience.

    I also bought the inexpensive attachment rings to hook my digital SLR to it to take photos through the eyepieces. All this added a lot of weight and things were drifting across the FOV, so I got a counterweight (2.5lbs.) to install.

    That sums up my gear to date. I feel I'm pretty well set, but wanted to get the opinions of folks with more experience.

    I'm not looking to rush out and buy more stuff until I think I need it, but would like to hear opinions of people who have been in my place before and hear your thoughts.

    I'd thought of a 9mm that I could Barlow, but frankly, don't see the need as things get pretty fuzzy at 6.5mm around here due to the light pollution. Oh, I also got a light filter to view nebula's and such but haven't used it yet.

    I'm thinking of a height adjustable chair for my old back and so my 4 year old has a comfortable perch when he's looking through it.

    Any advice?

    Regards,

    John

  2. #2
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    Default

    Well.. you got some of the best eyepieces ever made.
    Jumping in the deep end of the pool right off the bat....I like it.

    Let us know how you like that Ethos? I have been eyeing it for months now.

    Oh... You should bet set for a while....UNLESS OF COURSE YOU GET OBSESSED...LOL

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    Default

    John, that's quite a set-up you have. About the only othere eyepiece you might consider is something in the 25mm range to fill in in between the 36mm (56.4x) and the same eyepiece in the barlow (112.8x). A 25mm would give you 81.3x. Of course, in the barlow, the 25mm would be 162.6x, very close to what the 13mm is alone, so I'm not sure it would be worth it. This is assuming that your focal length is 2032mm (my 8" SCT is). personally, for me, though, I'd wanna fill that gap, even if it meant two more eyepieces for different spacing.

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    Default Eyepieces

    Thanks for the advice. I have an inexpensive 26mm Celestron Plossl that came with the telescope, so I think I'll use that one for awhile to see how if I use it enough to consider upgrading to a Televue brand.

    Picked up the 35mm Panoptic today and the counterweight. The 13mm Ethos arrives tomorrow, so hopefully, I'll get some good viewing with them tomorrow night or on the weekend. I'm excited to see what the FOV looks like through the Ethos. Everything I hear or read about it is very positive.

    Regards,

    John

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    Default

    Hi John,

    Use the eyepieces that you have now and those you have just purchased. Once you have a good amount of observing time with them, I'm talking months of viewing time not minutes, you will know what eyepiece qualities suit your taste. I am not sure where you live so I will not even hazard a guess as to your local viewing conditions and as to how often you will be able to use a 13mm eyepiece with or without a 2x Powermate. If the Ethos becomes your favorite you may want to wait for the inevitable introduction of an Ethos in the 20mm to 25mm focal length range.

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    Default Viewing

    Thanks for the reply. Picked up the 13mm Ethos and 35mm Panoptic today and was looking forward to a fun night of viewing.

    Fired up the CPC 800 and after an hour of trying to get it to display the correct time or once it did, to align properly, I gave up and just stuck it back in the garage.

    Darn thing never would align. The few times it said it did, it was wrong as it misidentified the three bright sky objects I selected.

    Very frustrating as it is supposed to be a nice clear weekend here and my 4 year old was looking forward to seeing some cool stuff with dad.

    It did this same thing the last time I used it, but eventually aligned and GoTo functioned after 4-5 tries. Tonight, I tried 10+ times and it either wouldn't display the correct time, or when it did, would not align, or worse yet, think it did and the stars it ID'd were all wrong!!!!!

    I suppose that's what I get for buying a used unit. I was wary of a used Celestron and their made in China products and was leaning towards a new Japanese Vixen and their 5 year warranty.

    I suppose I'll try a few more times in the coming weeks and maybe call Celestron, but really have neither the time or patience to mess with shipping it back for repair.

    Very frustrating........

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    Default

    Hi John,


    Man, that is a bummer. The good news is you have some killer EPs once you get the scope part figured out.

    Maybe the problem can be solved once you isolate where it originates. I know this is frustrating because after spending the bucks you want to observe (and now!), but the knowledge gained in understanding the workings of the scope may aid you in the future.

    I truly hope someone here can provide guidance with this gear. I sure cant.

    [I havent the foggiest notion about those scopes, but is there a way to manually slew the thing so at least you can enjoy the sights until the problem is solved?]
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    Default Slewing

    Yes, I can manually slew it with the hand held, which is what I had to resort to.

    Found that the power cord had been nearly pulled apart when my son tripped over it. I suppose that may have been the problem, but I'm sorta doubting it. I'll get a new power cord and go from there.

    Regards,

    John

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    Hi John,

    Since many people report problems like yours when they use rechargeable batteries, with their lower voltages, in their equipment a damaged power cord may well be your problem.

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    Default

    Celestron 26mm Plossl?

 

 

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