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About Opening
a DayStar Filter




The Sun Today

Through the years, DayStar has repaired hundreds of filters where curious astronomers felt they might open the assembly to try to fix a problem themselves. The tragedies are too sad to list here. Don't let your filter be one of those casualties!

DayStar Filters Policy on IRREPARABLE FILTERS and USER-DAMAGED Etalon Crystals:

We understand that astronomers, by nature, are a curious and educated type of person. We sincerely hope that any owner or user of a DayStar will read this page will understand that opening your filter has no positive results, and only serious negative ramifications.  

Opening the DayStar Filter exposes your filter to many types of unrecoverable damage, we therefore void any warranty should the filter assembly be opened. We can tell if a DayStar Filter assembly has been opened.


Don't let your filter be one of those casualties!  Just DON'T open it.  

Unfortunately, sometimes we must deal with the inevitability that an individual has opened and permanently damaged his/her DayStar Filter.  Naturally, NO user-inflicted damages to a DayStar Filter shall be covered under warranty, and DayStar Filters cannot be responsible for the cost to restore a filter should it be irreparably damaged due to unauthorized opening and abuse.  When irregular effects and /or tampering is suspected, DayStar shall photograph the suspected filter optics and record the conditions which support our findings. Regardless of the origin of the tampering, the filter owner is responsible for any cost to repair the filter. For safety and insurance reasons, DayStar Filters cannot return a filter with a damaged or missing etalon crystal. Such a filter would be unsafe for observation and therefore cannot be released by our laboratory. Copy of photographs and a inspection report may be requested for documentation purposes.

Irreparable damage can occur only when optical elements are separated, turned, disassembled, touched or re-assembled.
That damage includes, but is not limited to: 

Optical reassembly with permanent optical couplant - Elements would then be permanently inseparable with no capacity for further restoration.  Also if filter is assembled incorrectly, the filter cannot be restored.  The etalon crystal is destroyed in any attempt to open a filter wtih permanent optical couplant. All of the optical elements must then be replaced at a cost of the new filter less its housing. We will provide a quotation.

Tampering with optical assembly by twisting - The Etalon crystal has delicate coatings. If neighboring optical elements are twisted against the surface of the etalon crystal, the coatings (especially older coatings) can slide, separate and clump, leaving veins of varying coating densities. This etalon crystal cannot be restored. A new etalon crystal must be manufactured to replace this element. As the cost of a new etalon crystal is the most complicated and time-consuming part of the DayStar manufacturing process, it is therefore very expensive. Please note the chart below for user-damaged etalon crystal replacement costs.

Etalon crystal damage or removal - Occasionally, filters are serviced which have been tampered with and the etalon crystal has been removed, rearranged, touched, scratched, kinked, crinkled or removed altogether. These etalon crystals cannot be restored. A new etalon crystal must be manufactured to replace this element. As the cost of a new etalon crystal is the most complicated and time-consuming part of the DayStar manufacturing process, it is therefore very expensive. Please note the chart below for user-damaged etalon crystal replacement costs.

Send it back to: 
DayStar Filters LLC
149 Northwest OO Highway
Warrensburg, MO 64093

User-damaged etalon crystal replacement costs
TSCANNER
User - Damaged Etalon replacement
Repair Cost:
ATM / Quantum SE
User - Damaged Etalon replacement
Repair Cost:
UNI / Quantum PE
User - Damaged Etalon replacement
Repair Cost:

0.8Å TScanner Etalon

$475 US
0.8Å  ATM / SE Etalon
$1,150 US
0.8Å Uni / PE Etalon
$3,225 US

0.7Å TScanner Etalon

$850 US
0.7Å  ATM / SE Etalon
$1,500 US
0.7Å Uni / PE Etalon
$3,850 US

0.6Å TScanner Etalon

$1,450 US
0.6Å  ATM / SE Etalon
$2,050 US
0.6Å Uni / PE Etalon
$4,600 US

0.5Å TScanner Etalon

$2,050 US
0.5Å  ATM / SE Etalon
$2,800 US
0.5Å Uni / PE Etalon
$5,600 US

0.4Å TScanner Etalon

$2,750 US
0.4Å  ATM / SE Etalon
$3,500 US
0.4Å Uni / PE Etalon
$7,600 US
Restoration of filters with user-damaged etalons shall require full payment on commencement of work.  

Don't let your filter be one of those casualties!  Just DON'T open it.  

DayStar Filters LLC 149 Northwest OO Highway   Warrensburg, MO 64093 - USA
Telephone:
866.680.6563service@daystarfilters.com • FAX: 1-866-791-0448

website by Jen Dudley