EP for planetary viewing

[calluml314]

Hey guys,

I've been using my 200p dob for a weeks now and would like some ideas on a new eyepiece, mainly for planets. I cant see much of Jupiter in the supplied 10mm and would like to see more detail, what size ep should i go for? I've been having a look at the bst explorer's and the TMB planetary's and they seem quite good.

All comments welcome

[Damo636]

I would go with the BST's over the TMB Planetary's. The last couple of TMB's i had were not great. A lot of folk on here highly recommend the BST's.

[ronin]

Your 10mm should give a reasonable view of Jupiter. It is going to be at least 100x and that is easily high enough. So check for other aspects. Is the collimation good?

If you go for the BST's they have 8mm and 12mm, I assume that you are thinking of the 8mm?

[calluml314]

Your 10mm should give a reasonable view of Jupiter. It is going to be at least 100x and that is easily high enough. So check for other aspects. Is the collimation good?

If you go for the BST's they have 8mm and 12mm, I assume that you are thinking of the 8mm?

yes i can see jupiter well with the 10mm, but would like a greater magnification, and yes i was looking at the 8mm, i've read that the skywatcher ep's are not that good so was thinking a new ep would do better than getting a barlow.

[John]

I find 180x is good on Jupiter with my ED120 refractor and 10" newtonian. With your 200P dobsonian a 7mm eyepiece gives 171x and a 6mm, 200x. I'd probably go for a 7mm - that's a good step up from 100x in image scale without squeezing the detail out as long as the viewing conditions are decent.

[Mr Spock]

For Jupiter I find from x181 to x261 is most useful in my C9.25. You might try a 7mm to start with and see how you get on with that. You can always add a 5mm later (x240) to give you a bit more magnification when seeing conditions allow.

[cs1cjc]

I find it difficult to recommend "TMB" eyepieces when it is evident that there is a number of sources. So far as I can see, the TMB Optical version is not available in the UK.

[rwilkey]

The BST's are good planetary eyepieces and I can recommend the 8mm, I also have the 5mm, but prefer the magnification at 8mm, and use my William Optics 6mm SPL for higher mag. The other good thing about the BST's is that they do not break the bank at £41 from: 1.25" Eyepieces

[dweller25]

For Jupiter I use a 7mm eyepiece the most, followed by a 6mm when the seeing is good. Jupiter has low contrast detail so it's best not to use too much magnification.

Celestron do a nice 7mm .....

First Light Optics - Celestron X-Cel LX eyepiece

[chunky]

i got 8mm bst from skys the limit thanks to rwilkey.

and for the money and the step up from my stock sw 10mm is great.

i replaced the 25mm for a gso 32mm which is great

[calluml314]

Thanks for the comments guys, think i'll be going for the 8mm bst.

[dweller25]

Thanks for the comments guys, think i'll be going for the 8mm bst.

8mm = x150 which is a little bit low, Jupiter will be quite bright and some detail may be lost ......

[chunky]

yehh i do find it is bright. was wondering if the baader filter im after will brring more detail and contrast?