clean
-
Posts
6 -
Joined
-
Last visited
Content Type
Profiles
Forums
Gallery
Events
Blogs
Posts posted by clean
-
-
Thanks for all the help and suggestions everyone! greatly appreciated.
the scope showed up this morning. I wanted everyone's opinion on something I noticed. one of the secondary mirror supports seems to be twisted somewhat - all the others are dead strait. Could this throw off the collimation at all? or interfere with entering light? or does it even matter?
thanks again.
-
On 17/10/2021 at 13:49, Ricochet said:
Probably not. It looks like a 26mm plossl unnecessarily put into a 2" fitting for marketing purposes.
As someone with an 8" dob I would suggest that at some stage you will need one 2" eyepiece for your telescope, but it needs to be one that shows a wider field of view than a 1.25" eyepiece can show, and it needs to be one of decent quality so that it is reasonably well corrected to the edge. If the eyepiece isn't well corrected you might find that the usable field is actually less than in your widest 1.25" eyepiece.
For your initial upgrades, I suggest that something shorter than your 25mm is probably the way to go in order to give you a range of options to try on different objects. I would start by picking something in the 12-14mm range and then dividing whatever focal length you choose by 1.4 to find your next focal length.
thanks. As a total noob I am finding myself thinking that I would like to push the magnification envelope even though I have been told that's not a good idea XD. What would you say the TRUE max magnification for an 8" dob is? on paper they say 400x, but I have read even 250x can be a challenge?
my thought was that when I am going to try to push the magnification I would do so with an extremely high quality eyepiece to get the desired result - perhaps something like a 4.7mm televue ethos , or 8mm ethos w/ 2x Barlow.BTW, I agree that those cheap eye pieces look like a 26mm plossl unnecessarily put into a 2" fitting for marketing purposes, but I asked the seller to send a picture of the bottom (which they dont show in the ad) , and it appears to have a large chunk of glass in there so I don't think they are a 1.25 put into a 2" barrel - what do you think?
-
8 hours ago, Tiny Clanger said:
Yep, I understand entirely the wish to not give out too much information on a public forum, but a mention of country/county/city whatever does save wasted effort when we are trying to be helpful !
Heather
Thanks for bringing this up Heather. Located on Vancouver island, BC Canada.
- 1
-
Thank you everyone for the input. We will stick with the stock eye pieces for now. We will try the stock finder for now, and keep a RACI in mind. We will purchase a cheshire immediately.
I seen these 2" Chinese eye pieces on ebay, and I just wanted to ask you guys - have you ever seen these? are they complete garbage? or a bargain? no better then the stock 1.25 plossl? they look similar to the explore scientific stuff....
https://www.ebay.com/itm/303247554184?hash=item469af67688:g:oX0AAOSwR11dS5sO
thanks again everyone.
-
Hi everyone,
Well as the title says just ordered a 200P! pretty excited. This all started out with my 8 year old son wanting a telescope. I was instantly excited because he was showing genuine interest in something that I know is good for him. At this point something sort of unexpected happened - I caught the bug big time! Now we are excited together! Great!
anyway lots of reading ensued, and then ordered the 8" dob.
My main question is this - Will the stock 10 and 25MM 1.25" eye pieces satisfy? or are we better served to purchase a decent quality wide 2" eye piece to get started? perhaps something in the $1-200 range? I want this to be as easy as possible for him to jump right in.
Thanks for any advice!
- 1
Total newb - Just pulled the trigger on a Skywatcher 200P 8" dob. need advice on eye pieces.
in Getting Started Equipment Help and Advice
Posted
thanks guys, unfortunately the supplier told me to " twist that vein into a better position with your fingers" .
At this point ill try to get in touch with the manufacturer and see what they say. I get that its a hard item to ship back / forth, and the supplier obviously does not want to deal with that , but yes your right - its new and should be right.