RandyDSok
Well-Known Member
Because I'm overly OCD....
I thought it best to clearly state that while everyone is likely to know to not look directly into the Sun or it may result in blindness or serious eye damage.... The same is true for any telescope, lens or camera. You must ALWAYS use some type of filter that is sufficient to filter out the light BEFORE it goes into the telescope, lens or camera ( or similar optical device ). Otherwise excessive heat could build up within them not to mention the sensors would likely also burn out or be otherwise damaged.
The common less expensive filters specifically made for this type of work... are called ND100000 filters ( the ND stands for neutral density, in otherwords it's a gray filter that doesn't affect the color ). They only let 1/100000 of the light to pass through them. Typically a 58mm glass filter of this type a couple of years ago, would sell for around $35.... because of the solar eclipse event is drawing near... the price has tripled or more... so now they exceed over $100-$180 depending on where you can find them in stock... In short... the recent demand has outpaced the supply causing the price to increase.
I thought it best to clearly state that while everyone is likely to know to not look directly into the Sun or it may result in blindness or serious eye damage.... The same is true for any telescope, lens or camera. You must ALWAYS use some type of filter that is sufficient to filter out the light BEFORE it goes into the telescope, lens or camera ( or similar optical device ). Otherwise excessive heat could build up within them not to mention the sensors would likely also burn out or be otherwise damaged.
The common less expensive filters specifically made for this type of work... are called ND100000 filters ( the ND stands for neutral density, in otherwords it's a gray filter that doesn't affect the color ). They only let 1/100000 of the light to pass through them. Typically a 58mm glass filter of this type a couple of years ago, would sell for around $35.... because of the solar eclipse event is drawing near... the price has tripled or more... so now they exceed over $100-$180 depending on where you can find them in stock... In short... the recent demand has outpaced the supply causing the price to increase.