Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_beauty_night_skies.thumb.jpg.2711ade15e31d01524e7dc52d15c4217.jpg

emadmoussa

Telrad risers, 2" or 4"?

Recommended Posts

I've been waiting for these to be restocked for few weeks now...and fortunately FLO have received a  new shipment. The original plan was a 4" riser for my 6" refractor since it sometimes got me crouching on my knees like in a war trench. Now it seems like a good idea for the  Dobsonian as well, but not quite sure - considering I haven't had first light with it yet - whether  a 2" is a wiser option. I don't know to be honest and will appreciate some insight from those with similar set-up.

Share this post


Link to post
Share on other sites

I have the 2" on my dob and it's great. Very happy with it.

Share this post


Link to post
Share on other sites

I opted for the 4" riser on the basis that I wanted to make the biggest difference from the basic Telrad. No regrets, the only problem being my clumsiness bringing the scope out of the shed and catching the Telrad on the door, causing it to ping off!

Share this post


Link to post
Share on other sites

I have the 2" riser on my 10" Dob, it's great, but wish I'd got the 4" one.

I'd go with the 4" if I was you.

Share this post


Link to post
Share on other sites

I am more inclined towards the 4", but my main worry is my clumsiness..more protruding parts is an invitation for trouble :D

Share this post


Link to post
Share on other sites

I have my Telrad / riser positioned right next the my focuser so I opted for the 2" because I thought I'd head butt the Telrad but in reality that was never going to happen so yeah go for the 4". :)

Share this post


Link to post
Share on other sites

I use the 2" riser on my 12" Flextube and will use the same on the 16" Lightbridge. It's dead comfy and easy to look through. I always thought 4" risers were for much larger dobs (eg 20"+) where you need a step ladder to get to the eyepiece. I figured it was to raise the Telrad above thicker flanges on the top box, and/or other accessories or shroud, that may be in the way of a lower mounted one. :)

Share this post


Link to post
Share on other sites

I had a 4" but I'm sure even the 2" will improve the backache

Share this post


Link to post
Share on other sites

Mine arrived yesterday from FLO.  I opted for the 4" riser for my cpc800.  

It was nice not having to adopt some sort of martial arts stance in order to see through it with the scope near the zenith. I am loathed however to stick the base plate onto the tube using the sticky pads so I lashed it on temporary with a couple of plastic click lock belts

borrowed from a couple of pairs of walking trousers. I might see if I can get some really small ones and adopt this as a mounting method and replace the sticky pads with some soft hypalon foam from one of my redundant fishing rod handles. As long as I position it in the same place, the alignment should only require a slight adjustment each time which is enough for when I am setting up the goto alignment.

Share this post


Link to post
Share on other sites

I have the 2" and it's fine for me.  I'd be concerned about the ease with which the 4" might get caught on things when the OTA is being moved if you have to drag it through doorways and suchlike.

James

Share this post


Link to post
Share on other sites

I've just received my 2" today. In the end I decided to skip the 4" for reasons of hooking up to something or knocking stuff while moving. I'm glad I got the 2", it seems more than enough for me...and I can see that a riser double the height would've been a problem for me while trying to carry the tube from the lounge into the tight kitchen and through the back door then into the garden.

Share this post


Link to post
Share on other sites

Those protrusions and doorways can get nasty.  The rigel sticks up a bit too, but not too much for that to be a nuisance, but  I watch it carefully as I lift the OTA through the doors. Something I did not think about much when I bough my flextube, but it is nice to carry through  narrow doors since nothing is in front of your face, you can see where you are going very easily using the rims to pick it up, even of that is not the easiest on the back, but since I have no back issues it is no bother to me.

I always did wonder when looking for second hand dobs why so often minor dents are mentioned, now I know why, and how easily that can happen and where they come from. :smiley:

Edited by AlexB67

Share this post


Link to post
Share on other sites

 I use the 4" riser on my 10" Dob fitted with dew shield.

Share this post


Link to post
Share on other sites

The 2" riser seems to fit perfectly well on my 10"... same level as the optical finder which makes accidental knocking of surrounding objects less likely.

post-27451-0-58752500-1383411532_thumb.j

post-27451-0-12464000-1383411540_thumb.j

post-27451-0-57776000-1383411546_thumb.j

Share this post


Link to post
Share on other sites

Good to see you're happy with your choice, now all we need is some clear skies.

Enjoy.

Share this post


Link to post
Share on other sites

looks a nice bit of kit. I used to have a 4" riser on my 200p dob . I never had an issue with moving the scope as I tended to remove it from the base before taking the scope in. but the 2" looks to do the job perfectly well.  look forward to some reports .

Share this post


Link to post
Share on other sites

To emadmoussa

Yes i wrapped my 10" dob in foam which stopped my dew soaking problem that i was getting with the scope without any covering on it!

I brought a 1/4" thick sheet and doubled it up making a 1/2" blanket so to speak!, then wrapped the scope fixing with duck tape,

I made a foam tube for my finder scope and the telrad finder cover also, which stopped that dewing up with both of those as well ,  :smiley: 

  • Like 1

Share this post


Link to post
Share on other sites

The riser surely makes life easier, but the Telrad being a Telrad you'll still need to crouch and bend to get the target in place. Would've been a bit more difficult without a riser considering the side of the 10" Dob and the position of the Telrad.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.