Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Skywatcher 150P / 150PDS. What's the difference


Recommended Posts

I am new to astronomy, and have done a bit of research into which telescope I should purchase. I think the Skywatcher explorer 150 is suitable for my needs. But can anyone tell me what is the difference between the 150P, and the 150PDS

Link to post
Share on other sites

I believe the 150PDS is designed more for astrophotography, whereas the 150P is more for visual observations. 

Link to post
Share on other sites

Knighty2112 is absolutely correct but I think the PDS version can also be used for visual astronomy and comes with a dual-speed focuser (the "DS" in "PDS") which gives greater control over achieving sharp focus.

 

  • Like 1
Link to post
Share on other sites

And MKN is also correct - the PDS is dual-speed 10:1 Crayford. But now for a mystery.....

The FLO (First Light Optics, this site's sponsor and a major supplier of astro-goods in the UK) website lists the 150P at £259. While the 150PDS is listed at £209. You read that right - the scope with a better focuser is selling for less than the one with a single-speed Crayford (which are also excellent!).

Here are the links to each, with the 150P first:

https://www.firstlightoptics.com/reflectors/skywatcher-explorer-150p-eq3-2.html

And the 150PDS -

https://www.firstlightoptics.com/reflectors/skywatcher-explorer-150p-ds-ota.html

I won't say which to buy. But I know which one I'd go for!

Have fun,

Dave

Link to post
Share on other sites
3 hours ago, Dave In Vermont said:

And MKN is also correct - the PDS is dual-speed 10:1 Crayford. But now for a mystery.....

The FLO (First Light Optics, this site's sponsor and a major supplier of astro-goods in the UK) website lists the 150P at £259. While the 150PDS is listed at £209. You read that right - the scope with a better focuser is selling for less than the one with a single-speed Crayford (which are also excellent!).

Here are the links to each, with the 150P first:

https://www.firstlightoptics.com/reflectors/skywatcher-explorer-150p-eq3-2.html

And the 150PDS -

https://www.firstlightoptics.com/reflectors/skywatcher-explorer-150p-ds-ota.html

I won't say which to buy. But I know which one I'd go for!

Have fun,

Dave

This is not quite the sensation billed by Dave... The first link is for the 150P with an EQ3-2 mount whereas the second is for the 150PDS OTA only. The correct comparison is with the 150P OTA which is £183 so all is correct.

EDIT Aswell as the dual speed focuser, the PDS also has a shorter tube so it is better able to reach focus for astrophotography at prime focus.

  • Like 1
Link to post
Share on other sites

I can solve the mystery just by looking at the urls. The P is more expensive because it comes with an EQ3 mount, while the PDS is an OTA that requires a mount to be purchased separately.

 

Edit: Too slow!

Edited by Ricochet
  • Like 2
Link to post
Share on other sites

The 150PDS is primarily designed for astroimaging. The tube is a little shorter than the 150P version, meaning that that primary mirror is closer to the secondary mirror allowing a DSLR to reach focus more easily - something that was a problem with the 150P. The secondary mirror is also larger on the 150PDS to take into account the closer primary.

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.