badder hyperion advice!

[bmc]

hi, i'm considering buying a badder hyperion 68 degree ep 17mm. then possibly the fine tuning rings (14mm & 28mm).

my scope has a focal length 1500mm (f11).

would this ep suit my ota?

[Mav359]

Someone clever then me can work out for you if you can achive focus (i dont see why not) but that should be the only thing you need to check.

As for the eyepiece i have one and the rings and they are brilliant, if you can use then you won't be disapointed

[Pete Presland]

it will be fine in an F11 telescope they do suffer in faster scopes though, it will give a magnification of x88

[Dude_with_the_tube]

you will be perfectly fine with that EP in your scope and tuning rings will give your EP a few more focal lengths.

[steppenwolf]

I have the 17mm and love it - it is better suited to 'scopes with a focal ratio of slower than f6  so you should be fine there. I think that in terms of Hyperions, the 17mm is possibly the pick of the bunch. The tuning rings work well and are worth the extra money but be aware that they are fiddly to use outside in the cold - better to plan in advance and assemble inside.

[bmc]

Thank you all for your advice. i thought that my scope was slow enough. is there any ep size in the hyperion range not suitable for a f11 scope? or will they all be suitable?

[YKSE]

3.5mm and 5mm will be too much magnificaion for your scope, all others should be fine.

[bmc]

once again, thanks all

[Damo636]

As already stated, the Hyperion will be fine in your scope. Consider this though, these will perform equally, if not better (albeit with a slightly smaller fov), and you'll have two focal lengths for less than a single Hyperion and the tuning rings......

http://www.ebay.co.uk/itm/1-25-18mm-BST-Explorer-Dual-ED-eyepiece-Branded-Starguider-/161049462890?pt=UK_Telescope_Eyepieces&hash=item257f4bc86a

http://www.ebay.co.uk/itm/1-25-12mm-BST-Explorer-Dual-ED-eyepiece-Branded-Starguider-/380679675225?pt=UK_Telescope_Eyepieces&hash=item58a246dd59

Just some food for thought!

[bmc]

Cheers Damon, I'll give them a look. I was thinking though if I had the badder hyperion plus the two rings, it  would give me 3different focal lengths, and the option to supply myself with more of these ep's.

[Tinker1947]

I use a 17mm Hyperion with my C11. wonderful EP well worth having......stick to you original plan or you will be  still looking at EP's in a weeks time...

[bmc]

thanks, will do 

[nicks90]

also, if you have a 2" focusser - dont the hyperions have the little bit in the middle that unscrews (the 1.25" part), turning it in to a widefield longer focal length erfle design?

[BillP]

When I had the Hyperions, I used the fine tuning rings extensively.  Found them to be quite an innovative idea and they worked quite well with all the focal lengths.  When adding them to the 5mm Hyperion it did increase the later color in the off-axis some, but not enough to bother me.  Also note that the 24mm Hyperion cannot use the rings as it has no lenses in the barrel.  Also note that the 24mm, being a different optical design, does not have as good correction off-axis, especailly for fast focal ratios, and some folks don't like that one too much.  I found it acceptable though as I use 24mm more as a finder focal length than a critical observing focal length.

Now if Baader could make a telescoping fine tuning ring so it zooms, then that would be really neat!

[bmc]

also, if you have a 2" focusser - dont the hyperions have the little bit in the middle that unscrews (the 1.25" part), turning it in to a widefield longer focal length erfle design?

yes they do. if you had for example the 17"ep, took off the bottom part (as though you were fitting an adjustment ring). the ep would become a 30"ep.

[red eye]

Nebula,

I use the 8mm and 17mm plus the 2 rings in scopes down to F6 and they perform well, so they will be excellent in your f11.  I too have also liked the views better in the 17 than the 8, although I have never liked the view in either, once you remove the lower set of lenses and use the eyepieces in a dedicated 2 inch format. Without the first group of lenses, both the 8mm and 17mm have the same 21.8 focal length, and in my opinion, a soft and largely unusable image. Therefore, I always leave on the lowest group, and the 17 becomes a 13.1 mm with the 14 mm FTR, a 10.8mm with the 28mm FTR, and a 9.2 with both rings attached. All things considered, Very good bang for your buck. Hope this helps.

David

[bmc]

once again, thanks David ( 17" plus the two FTR'S also on my Christmas list) 

[M4lcs67]

I own that eyepiece and also both ftr's. Brilliant piece of gear and I love the fact that it is modular with the inclusion of the tuning rings. 4 eyepieces in one. Awesome. Will be fine in your scope.

ps

They call it the hand grenade. I'm sure you can work that one out.!!!

[M4lcs67]

Also, I was told to change over the tuning rings when outside to reduce the risk of getting dust inside the element. Tricky yes. Trying to do it in the dark can be something of a problem, but I have managed it. Isn't a problem if you are using a red head torch. If you have a small garden table or something like that that you could use for the changeover just in the event you drop something.