Jump to content

We politely request that members refrain from discussing politics and/or the Brexit debate on East Midlands Stargazers. Let's keep it to the topic at hand... Clouds. ☁️

  • Join the online East Midlands astronomy club today!


Sign in to follow this  

We're back

Recommended Posts


Although we technical didn't go anywhere.

As some of you may know we have lost the use of our normal meeting place at the Ilkeston museum while building works have been taking place, although we have continued with our informal meetings at Shipley park on the last Wednesday of the month.

We are pleased to announce that we have found a new temporary home at the Ilkeston fire station. Unfortunately we have had to change our formal meeting times and day.

We shall now meet on the second Thursday of the month as from the 9th of July, 7pm until 9pm.

Our first speaker at our new venue will be Phil Jaworek from EMS with his talk "Classic achromatic refractors"

Brief outline,

What is a Vintage Refractor.

Brief history of the achromatic refractor – including description of Chromatic Aberration and focal length and their relationship in refractor design.

Brief description of the Apochromatic Refractor.

Advantages and disadvantages of the achromat.

Achromats old and new – a few examples of famous (and not so famous) makes from the past 100 years including some of my own examples.

Accessories – eyepieces etc to match the vintage scope.

What place does the achromat have in modern amateur astronomy, modern classic style achromats.

What to look for in a vintage/classic scope.

Where to buy and what to pay.

Where to get info plus some interesting reading.

We look forward to welcoming Phil along.

Everyone welcome £1 for refreshments for members £2 for non-members.

Share this post

Link to post
Share on other sites

A big thank you to Phil for a well received talk at our first meeting at the fire station. Very interesting talk including some scopes owned by members.

A great introduction to refractors both old and new with lots of eye candy.

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.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  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.

Sign in to follow this  

  • 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.