SingAstro

Hi,Stuart If you are saying cosmic radiation as gamma radiation,I think a little get through our atmosphere and strike us.I still remember those days in the U where I use a GM counter to measure the background radiation and its almost constant inALL direction--slightly higher when the counter is fac...

Sunspot 1050 is dying already and no more visible in Ha;but still visible in Cak and white light,while 1051 show itself as a dot-approx earth size-and contain bright glowing regions in Ha.

Hi,THEO-007 Why do you call the region 1048?I think its 1049.Sunspot 1048 was unspectacular and disappear soon after it showed up whereas 1049 survive all the way after it appeared.Anyway its over the other side of the sun now.;However do look out for sunspot 1051.I saw it as a dot and actually phot...

Hi,All solar observer Seen two new sunspots;one near the center of the sun and another just rotated into view from the other side of the sun.The one at the center shows lots of activities with a long filament connected to one pole of the disturbances.The other from the other side can barely be seen ...

Hi,eMinity If you are talking about filter's transmission curve;it is--the height of the curve indicates how many % of that wavelength light it tranmit-- but transmission curve is not everything.If you are dealing with interference filter;then bands of rings may appear at unexpected places in your p...

Yes,those regions are huge.Although(yesterday) there is one sunspot 1049; but in Cak there are 3 bright regions the size of almost 100 earth each.Fantastic stuff on the sun--every day there is a good movie on the sun!

Hi,Bergkamp_ I find such short discussion on the sale items enlightening esp to newbie to the equipment.To make this thread useful, onfo on the sale items is important;not just from the manufacturer but also from had been user.What I dont like is that the seller,after selling their stuff replace the...

Hi,All solar observer
Well the region in the south didnt actually make it and two days age a bright region rotated into view in the northern active belt.Yesterday seeing was bad but a gap at noon in Cak indicates its spotted in Cak.Today spaceweather call it Sunspot 1048.Do take a look.

Hi,THEO-007 Great pic but it seems that you had miss the bright patch in the south which I saw 2 days ago-now still present but didnt flare up to be a sunspot--my suspected 1048?.Today this northern belt which you photographed had an extension--namely a new bright region come into view due to the su...

Hi,Stuart
Pls reserve for me.Maybe I come to your place to get it as its unfair for you to spend $4 to sell away a good item at only $10.Thanks.