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tuckstar

We're back

3 posts in this topic

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.

BAZ likes this

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Just a quick bump for our first meeting at ilkeston fire station as detailed above.

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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.

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