Jump to content

Recommended Posts


I'm new to astronomy and have recently brought a low budget telescope (about £60). I've been out a few time to view Mars and the moon. 

Obviously I can view the moon clearly and with great detail but when I go to view Mars all I can see is a bright circle. 

I'm not sure if I'm being daft or what, but I can't find anywhere online that has an answer to this. 

Details about my telescope are: 

It's a reflector telescope 

Model 76700

Diam: 76mm

Focal length: 700mm

Link to post
Share on other sites

You have the diameter of 76mm (which is pretty low) so viewing detail on Mars should be pretty hard.

The most suitable eyepiece should be the 12.5 mm,.

Edited by Spacecake2
Link to post
Share on other sites

If you see a circle, the scope is not focused properly. Try using the 12.5mm eyepiece and adjust the focus until Mars appears at it's smallest in the view. It should then look like a very small pinkish spot.



Link to post
Share on other sites
11 minutes ago, harry_tarrant said:

Thank you! Do I need any lens filters at all? 

Not really. Just use the lower power eyepieces (20mm and 12.5mm) as you get used to using the scope. The 4mm will make things much more challenging because it gives very high magnifications - it might be useful to view the moon with though.


Edited by John
Link to post
Share on other sites
On 10/10/2020 at 00:57, harry_tarrant said:

Thank you! Do I need any lens filters at all? 

If you have a Moon filter you could try that (attach it to your eyepiece input end or the diagonal if there's a thread for it), it will just reduce the dazzling brightness as Mars is outshining all except Venus and the Moon at the moment.  To dim the view further you could try reducing the aperture of your telescope with a cardboard ring taped to the front, just to reduce the amount of light from Mars entering the scope.  Mars won't be this close or bright again for 15 years so worth a go to get the best views you can!  Mars will start to get dimmer from tomorrow but also further away.

With the disc being rather small in your scope you may not be able to discern surface detail, but if your view isn't too dazzling and keep looking you might just be able to make out differences in light and dark hemispheres. 

Edited by jonathan
Link to post
Share on other sites

If the eyepieces bundled with the kit allow for screwing a filter onto the bottom of the barrels, you might consider a variable-polariser...


It's like a dimming-switch for a light-fixture within the home, but for the brighter and brightest objects of the night sky instead.  One section of the filter rotates against the other for adjustments.

I've used that one with great success, for Jupiter, Venus, and Mars...


For Venus, and in seeing its Moon-like phases more distinctly.

Link to post
Share on other sites

Are you referring to just seeing a pinkish circle? If so then given your stated telescopes aperture then I am afraid that is all your going to get.

The 4mm eyepiece is too small, a 5mm would be better. 700/5 = x140 magnification.

However the lack of aperture is a big restriction on the detail you will see. 

If you can get to a place with a good unobstructed view of the south you will get a decent view of Jupiter and Saturn with your scope. Cloud belt of Jupiter and the rings of Saturn should be quite pleasing.

However if you want more then I am afraid it's wallet opening time. 

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.

  • Similar Content

    • By Pincs
      Hi, I got a skywatcher classic 200p just before xmas and I havnt done much planet viewing due to not having more than a 10mm eyepiece for magnification. I recently got a 2x barlow lens and tried viewing last night with a barlow and 10mm lens and it came out very blurry and I couldn't see any detail and it still seemed quite small. I was viewing on a close night when there was a break in the clouds so may have not been the best conditions. Any tips for how much magnification I need and how to see it better. Thanks.
    • By Vectoron
      Finally got to image Mars this year after some appauling weather in the UK. 
      This was my first time out using the ZWO ASI 224MC on a very cold eve.  I think i've probably the maxed out my equipment (Skywatcher 200p) and the location (back garden in the middle of an estate) for this image, so pretty pleased with the results.  Its 15% of 11000 frames stacked using Autostakkert, and Registax used to bring out some detail.
      Equipment used:
      Skywatcher 200p with dual speed focuser, EQ5 mount with dual axis motors Tal x3 Barlow ZWO ASI224mc with IR Filter  Lenovo x270 laptop running SharpCap  Image Processed in Autostakkert, Registax and photoshop   

    • By MarsG76
      Hi All,
      Sharing some more Mars images, quite possibly the last images of Mars that I'll be spending time on capturing this season, but the last image, 14th November has something strange on it.. two streaks which look like smoke plume, volcanic like, smoke plumes being blown in a direction away from the eruption.... Is it possible that Mars is still active?

  • 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.