Transits of Mercury

Post by **weixing** » Wed Nov 08, 2006 9:49 pm

Hi,
IMHO, Solar eyepiece projection is not recommend nowadays because it is not very "healthy" for the scope (especially for those not so well built scope), unless your scope is design to do this type of projection.

Anyway, if you want to do this, it is better to use a small refractor (or mask your scope) that the manufacturer indicate that this can be done and an eyepiece that can withstand the heat.

Hope weather is good tomorrow.

Have a nice day.

mrngbss · Post by **mrngbss** » Wed Nov 08, 2006 9:53 pm

My observation these two mornings (7-8Nov) are :

1. cloudy/no sun from 7-9am.
2. Slightly blocked Sun was visible from 9am onwards.
3. The Sun was bright from 10am today.

Really need a lot of hope for good weather tomo.

jiahao1986 · Post by **jiahao1986** » Wed Nov 08, 2006 9:56 pm

weixing wrote:Hi,
IMHO, Solar eyepiece projection is not recommend nowadays because it is not very "healthy" for the scope (especially for those not so well built scope), unless your scope is design to do this type of projection.

Anyway, if you want to do this, it is better to use a small refractor (or mask your scope) that the manufacturer indicate that this can be done and an eyepiece that can withstand the heat.

Hope weather is good tomorrow.

Have a nice day.

I agree it is not recommended for larger scopes. However, you can try to make a off-axis 'filter' witout solar film to reduce aperture, and now is not too late.

Jia Hao

Robin Lee · Post by **Robin Lee** » Wed Nov 08, 2006 9:58 pm

Haha, it doesn't make sense to get a PST now as it may be cheaper in the future.

I think I am going to absent my class for this event, I will only reach the school later.

jiahao1986 · Post by **jiahao1986** » Wed Nov 08, 2006 10:00 pm

Kim Miau wrote:I think I am going to absent my class for this event, I will only reach the school later.

Find yourself some nice excuses la~~~

Robin Lee · Post by **Robin Lee** » Wed Nov 08, 2006 10:04 pm

jiahao1986 wrote:
Kim Miau wrote:I think I am going to absent my class for this event, I will only reach the school later.
Find yourself some nice excuses la~~~

Since the school has just finished the calculation of our marks, I think I don't have to excuse for my late arriving anymore.

If it were several weeks before, I will get deducted 0.1% (this is a lot actually because the score deducted is the final score).

kingkong · Post by **kingkong** » Thu Nov 09, 2006 8:11 am

where is mercury....?

Tachyon · Post by **Tachyon** » Thu Nov 09, 2006 8:51 am

kingkong wrote:where is mercury....?

Look carefully at upper right for the small dot.

Tachyon · Post by **Tachyon** » Thu Nov 09, 2006 8:53 am

Ok.. I hate to admit it, it was boring.

I was watching in my office using the C8, and was distracted by the sunspot instead. The most exciting moment was when Mercury disappeared off the edge of the sun. Other than that, give me a good H-alpha anytime!

Cheers!

boothee · Post by **boothee** » Thu Nov 09, 2006 10:30 am

We saw it through our telescopes. Beautiful! Tried to capture but can't even focus.

Cheers !!

;O)
boothee