WBO (Web-based Obervatories) (6楼开始更新照片)

S&T上介绍的目前几个比较成熟的WBO:

slooh.com
lightbuckets.com
global-rent-a-scope.com
cherrymountainobservatory.com

几家的对比：


有兴趣的可以讨论一下，个人觉得国内某些无光害地区的天文台/个人天文台也可以利用当地的便利条件提供类似服务。

Why Go Remote?
Twenty-five Reasons!

   1. The choice of 8 research grade telescopes and CCD's at your disposal.
   2. Access to both northern and southern hemispheres.
   3. 24 hour darkness as our systems are located in 3 different time zone.
   4. Poor weather is less of a problem as we have 4 different observatory located around the world.
   5. We offer you some of the darkest skies (AREO1-5).
   6. Premium 24/7 personal customer service and support.
   7. Eight different FOV's (estimated by October 1, 2006).
   8. A variety of professional grade equipment.
   9. Access via the Internet; using MS Internet Explorer v6.0+ or Firebox.
  10. High-speed FTP download service included.
  11. LRGB and UBVRI and Ha,SII and OIII filters.
  12. Low, affordable rates.
  13. No setup or tear-down time.
  14. Efficiency…efficiency…efficiency!
  15. Strategic global locations assures Imaging 24 hours a day (target September 15, 2006) (weather permitting).
  16. No Capital Investment.
  17. No long-term obligations.
  18. Satisfaction guaranteed or your money back.
  19. Basic image processing support included.
  20. Leading Brand names, Takahashi, RCOS, Paramount, SBIG and FLI.
  21. Low Monthly Discount Membership available.
  22. Special research activities.
  23. Retain all intellectual property rights over your data.
  24. Opportunity to collaborate within our international community.
  25. User friendly systems for novice to the professional astronomer.

Why Remote Imaging Makes Sense
When most people get interested in astronomy they initially purchase some type of entry level telescope. The price tag generally varies from $500 to $3,000 depending on the type of system they purchase. This decision to initially purchase less expensive equipment may have significant dire consequences and compromise their entire lifelong astronomical and astrophotographic experience.
Very quickly some realize they need more accessories and equipment to enhance their observing experience. If their interests advance to astrophotography then the need for more sophisticated equipment becomes even more apparent. Of course the cost invested also increases incrementally.

Over a reasonable period of time (say 5 years) the initial investment of $3,000 soon grows to $15,000 or $20,000 depending on how ambitious the target activity and the available funds. The $20,000 expenditure does not occur overnight. The driving force behind all of this investing in new equipment is the pursuit of perfection in producing professional grade images. It is more likely that the purchase of better quality equipment occurs over a period of several years. This is the time it takes for the user to become aware of all the pitfalls of entry level equipment. This is also the time it takes to experience the fairly steep learning curve and develop a new level of sophistication. Coincidentally this is also the time it takes for the level of frustration to develop over the lack of performance of the less expensive equipment.

Productivity now becomes an important issue. How many times will the purchaser of all this expensive equipment get to use it? It depends on how committed the astronomer is to astrophotography and where the astronomer lives. In most cases they will have to drive 2 to 3 hours to reach a site dark enough to practice their skills. Also there is the time invested to perform all these feats of astronomical magic. Since many of the devotees work during the week most of the time they get to explore their avocation is during weekends. Between the possibility of the appearance of the Moon and inclement or cloudy weather this knocks down the chances of a successful mission to a fairly few occasions per year. Of course then too is the trip back. Another 2 to 3 hours invested in nonproductive time. All of this does not allow for other issues like the cost of fuel, cold weather, clouds rolling in and spoiling the trip, persistent biting insects and a myriad of other incidentals.

To summarize, an individual that is very serious about pursuing an interest in astronomy and astrophotography generally spends around $20,000 for a reasonably good performing system (the range may be between $12,000 and $75,000):

   1. Telescope: $3,000 to $50,000
   2. Mount: $5,000 to $20,000
   3. CCD Camera: $2,500 to $10,000
   4. Other needed accessories: $500 to 5,000
   5. Total Cost: $11,000 to $85,000

It takes around 3 to 5 years accomplish this objective. After all of this has come to fruition, the persistent user may only get to use it 15 to 20 nights a year. Over the 5 year period this amounts to a total of 120 nights of usage at an approximate average cost of $166 per night (based on an average cost of $19,950). Then there is the cost of the following to consider. Each person must place their own value on their time:

Load-up time, Drive-time, Time to set up, Alignment, time to photograph (maybe an average of 6 hours per night), Tear-down, reload, drive back time and finally unload time.

So here is the bottom line: Let us assume an average shooting time of 6 hours per night. That amounts to 600 hours of shooting for a 5 year period or 120 hours a year. The cost of using Global Rent-a-Scope for 120 hours per year can be around $2500. Extend this cost for the 5 year period and the total cost for a 5 year period is $12,500. The overall difference right up front is $8,000 less for Global Rent-a-Scope. Now consider this, the user gets to use world-class observatory equipment that is the best money can buy.

This is equipment few astrophotographers could or would even contemplate purchasing for themselves. The equipment setups at Global Rent-a-Scope are some of the best equipment ever assembled. These systems generally cost over $50,000 each.

The comparison continues...
Other costs vary depending on the user’s individual circumstance but you can bet that the costs will really mount up over a five year period. Gasoline alone accounts for most of the difference (60 trips X 200 miles = 12000 miles / 20 mpg = 600 Gals X $3.00 per gal = $1,800). Keep in mind the user also gets to save the travel time in both directions too. Based on 60 sessions (120 nights /2 to account for weekends) times 5 hours (2.5 hours each direction) or an average total of 300 hours (over the 5 year period). How much is that worth? That amounts to almost 38 man days (8 hours per man day). If you figure the value of your time is greater than $3.00 per hour then you have saved an estimated whopping $11,000. Of course your particular circumstances may vary but even with extremely conservative estimates it would appear the savings using Global Rent-a-scope are significant.

Some may contend that after the 5 year period has passed they will still have their equipment that they could sell to recover their costs. While this is true to an extent with some exceptions, most equipment looses 50% of the value as soon as it is purchased.

So what is the value of pursuing your favorite past-time and still being present to share time with your family? Using Global Rent-a-Scope allows you the freedom to pursue your astroimaging and still be close by. I’m sure your spouse and children would also appreciate your thoughtfulness.

Overall, the calculations clearly point to the incredible convenience and value of Global Rent-a-Scope. This is a very cost efficient and extremely convenient way to perform CCD astronomy. This is the way the professional astronomer’s gather their data.

The Global Rent-a-Scope system allows for a significant increase in image production over the direct methods currently employed by most CCD astronomers today. The system is ready to go with just a few mouse clicks. Should the weather turn unfavorable the user can simply log out and continue on as normal; no significant time is lost.

Since long trips are no longer required or even any advanced planning, for that matter, the user can even do imaging even on a work night. With Global Rent-a-scope's ability to provide you with imaging capabilities 24/7 you are certainly provided with a lot more opportunities to pursue this activity in a more convenient way at a more convenient time.

Look let’s cut to the chase; if your objective is to drive around for hours looking for a dark site; spend a great amount of time suffering from bone-chilling freezing temperatures; exposing yourself to possible injury by lugging around heavy and awkward equipment; risk the loss of your equipment to thieves, while you might be napping or worse yet, suffer personal harm from unknown assailants that may pray on unsuspecting lone astronomers. If this is your preference Global Rent-a-Scope will not make a lot of sense to you.

On the off chance you would really prefer to just create a lot of incredibly beautiful CCD images in the most time and cost efficient manner, then Global Rent-a-Scope is your answer. We guarantee you will gather more data to produce 10 times more images in half the time than the typical method described above. Keep in mind some of our users are even benefiting from operating several systems simultaneously. Talk about efficient use of time and resources! They can produce the luminance frames on one system and capture the RGB data on another; all at the same time! I am telling you it just doesn't get any better than this.

Web-Based Observatories
A web-based observatory (WBO) is an internet tool
that makes high-end observing equipment available to the
public. Whether you are a beginner, a seasoned astrophotographer,
a science teacher, or a researcher, there are WBO
services available for your needs.
WBOs are the logical melding of today’s astro-imaging
technology and widespread high-speed internet access.
Computer-controlled CCD cameras entered the amateur
scene about 20 years ago, followed soon after by computerized
Go To telescope mounts. By the turn of the century
software developers had created the necessary automation
for observers to set up high-end observatories that could
be remotely operated over the internet. WBOs make this
technology available, for a modest fee, to any computer
user with internet access.
WBOs off er lots of benefi ts. Like me, many amateurs
live in light-polluted suburban areas. I image from my
backyard, but my best work is done by transporting my
equipment to locations away from city lights. The WBOs
I sampled for this story are in the kinds of locations
most of us only dream about. They tend to be at higher
elevations, very far from city lights, and experience good
year-round weather.
Some have telescopes in the Southern Hemisphere,
giving me a chance to image many fascinating objects
that can’t be seen from my home in California. And I can
do it with premium equipment. On those occasions when
I’ve traveled south of the equator, I’ve been limited to carrying
little more than a small telescope or a good pair of
binoculars.
With WBOs, there’s no equipment to transport or
set up, and weather is only an issue for time-sensitive
observations. But given the geographic distribution of
the telescopes, it might be possible to have at least one
under a clear sky at the right time. Indeed, some WBOs
legitimately claim to have 24/7 dark-sky access, as well
as policies that allow users to work around poor weather
conditions without incurring extra costs.
WBOs off er a bridge for beginner and intermediate
observers by making high-quality equipment available
without the risk of a substantial investment. Beginners
can start with easy imaging modes that produce good
results, and then transition to more advanced imaging as
they develop the necessary skills. The experience can be
far less frustrating than starting out with a lot of new gear
that you have to set up and master on your own.
There’s also an advantage for those of us who are
already seasoned astro-imagers and want to try our skills
on very high-end equipment. This refl ects on my own
experience, since I’ve often wondered what images I
could produce with a top-notch telescope at a premier
site. WBOs provide that opportunity. They don’t replace
my telescopes, but they put another tool in my toolkit,
while also extending my reach to celestial objects located
anywhere in the sky.
The cost varies according to what you want to do,
and there are a variety of payment plans. Some services
require an annual fee. Others have you purchase points
that are used to schedule observations. In some cases
you request that an image be made with parameters you
select, but the WBO maintains the freedom to queue your
observation to its own schedule. And there are WBOs that
allow direct, real-time control of the telescope and imaging
equipment.

刚刚用试用权限拍的

M 51 .................

m101, m17, m27, m20, m57

额。没人顶LZ呢~~

又拍了几张

另外重拍一张m8，还有m31

全英文。。。。

这个作为日常观测的补充是可以的，但是真的成了网上天文爱好者那也是件很悲哀的事情。

我觉得主要还是要看条件，如果所在地观测/摄影条件非常差，wbo还是个很不错的选择
详细解释见前面几楼
另外以上照片均为单张无叠加

lightbucket是好东西呀，那台24寸R-C望远镜挺牛的，谁要是能试一试就爽了。

明天再用一下澳大利亚的sky 90

又拍了一张m31，见10楼

看起来挺不错。。。

其实挺好的，要钱才能随意控制

好漂亮呀