![](https://ae01.alicdn.com/kf/S4c916b821c3f4a39858417be0d0db7d1m.jpg)
»õ·Î¿î ASKAR FRA ½Ã¸®Á »ç¿ëÇϴ ȯ¿µ! "FLATFIELD REFRACTOR ASTROGRAPH" ¸¦ ÀǹÌÇÕ´Ï´Ù FRA ´Â ±¼Àý ±â astrograph ³»Àå Æò¸é ÇÊµå º¸Á¤ÀÌ Æ¯Â¡ÀÔ´Ï´Ù. ÇÑÆí FRA ¶ÇÇÑ °üÂûÀÇ ¿ä±¸¸¦ ÃæÁ· ÇÏ °í ½ÃÀå¿¡ ÇÁ¸®¹Ì¾ö ±¤ÇÐ ¸î °¡Áö ´ÙÀç ´Ù´É ÇÑ ¸Á¿ø°æ Áß Çϳª µÉ ¼ö ÀÖ½À´Ï´Ù.
·»Áî ¸Å°³º¯¼öÀÇ ½¬¿î º¯È¯¿¡ µû¶ó, ¿ì¸®ÀÇ Ã¹¹ø° FRA ½Ã¸®Áî Á¦Ç°Àº 5.6mm ÃÊÁ¡ °Å¸® ¹× 72mm °¡´Æ±¸¸ÛÀ» °¡Áø f/400 quintuplet astrographÀÔ´Ï´Ù. 2 ED (¿©ºÐ ³·Àº ºÐ»ê) À¯¸® ¼ººÐÀº ¶ÇÇÑ È¿°úÀûÀ¸·Î »öä ¹è±ÞÀ» ¾ï¾ÐÇϱâ À§ÇÏ¿© Æ÷ÇԵ˴ϴÙ. Fra400´Â 44mm °¡µæ Â÷ÀÖ´Â ±¸Á¶ À̹ÌÁö ¿øÇüÀ» Ư»öÁþ½À´Ï´Ù.
äÅà Çö´ë ¸Á¿ø°æ ±¤ÇÐ Æ©ºê µðÀÚÀÎ, ±â´É °³Æó½Ä µà ½¯µå, 3 "´ëÇü °íÁ¤¹Ð ·¢-ÇǴϾð Æ÷Ä¿¼ 360 ° ȸ ÀüÀÚ, ±â´É M68 X 1 ½º·¹µå, 2" ¾î´ðÅÍ ¸µ ¹× 1.25 "Á¢¾È ·»Áî ¾î´ðÅÍ. Æ÷Ä¿¼´Â ¶ÇÇÑ °üÂû ¹× »çÁøÀ» À§ÇÑ ³ôÀº Á¤¹Ðµµ ¸¶ÀÌÅ©·Î Á¶Á¤À» Ư»öÁþ½À´Ï´Ù.
±×°ÍÀº ÅëÁ¦¿¡¼ ¿ì¼öÇÏ °¡´ÉÇÏ°Ô »öä aberrations¸¦ ÇÇÇÏ°í, À̹ÌÁö ÁúÀº ¶ÇÇÑ ÇÊ¿äÁ¶°ÇÀÇ °í°´À» ¸¸Á·½ÃÅ°±â À§ÇÏ¿© ³«°üµË´Ï´Ù.
±× FRA 400/5 ¾ð±Þ ÇÒ °¡Ä¡°¡ ÀÖ½À´Ï´Ù. 6 ½ÖÀ» °¡Áö°í ´Ù±â´É ºÎÂø Æ©ºê ¹ÝÁö ¼ÒÀ¯Çմϴ٠ƯÇã, ¸ðµç ½ºÅ¸ÀÏ ¹× ¹°Áú ÀÖÁö¸¸, FRA º¸¿©ÁÝ´Ï´Ù Àß À×Å µðÀÚÀÎ µîÀÌ ½Ç¿ëÀûÀÎ ¾ç¸é ÀåÂø Ç÷§Æû, »çÁøÀ»À§ÇÑ ´Ù¾çÇÑ ¾×¼¼¼¸®¸¦ ºÎÂøÇÏ´Â µ¥ Æí¸®ÇÕ´Ï´Ù.
ASKAR FRA 400/5.6 APO astrograph¿¡´Â 140mm, °Å¸®¸¦ caculate ÇÒ ÇÊ¿ä°¡ ¾ø½À´Ï´Ù. »çÁø Àåºñ¸¦ ºÎÂø ÇÒ ¶§ ÃÊÁ¡ ³» À̹ÌÁö¸¦ º¼ ¼ö ÀÖ½À´Ï´Ù.
Stocky ¹× ÈÞ´ë¿ë, ASKAR FRA400/5.6 ´Ù¾ç ÇÑ ¾×¼¼¼¸®¿Í °áÇÕ ÇÒ ¼ö ÀÖ½À´Ï´Ù ¶ÇÇÑ »ç¿ë Çϱ⠽¬¿î, È¿°úÀûÀÌ °í ¸Å¿ì ´ÙÀç ´Ù´É ÇÑ »çÁø/½Ã°¢Àû µ¿¹ÝÀÚÀÔ´Ï´Ù.
F5.6 ÀÇ ÃÊÁ¡ ºñÀ²Àº ¸Á¿ø°æ ¶Ç´Â õü »çÁøÀ» À§ÇØ »ó´ëÀûÀ¸·Î `fast` ÀÌÁö¸¸, ÇÁ·Î ·¹º§ õ¹®ÇÐÀÇ ¿ä±¸¸¦ ÃæÁ·½ÃÅ°±â À§ÇØ Æ¯º°È÷ Ư¼ö ÃʴܰŸ® ÃÊÁ¡ °¨¼Ó±â fra72rÀ» ¼³°èÇß½À´Ï´Ù. FRA400/5.6 ¿Í »ç¿ëÀ» °áÇÕÇϽʽÿÀ, ´ç½ÅÀº ³ëÃ⠽ð£À» °¨¼Ò½ÃÅ°±â À§ÇÏ¿© ±¤ÇÐÀûÀ¸·Î ´õ ºü¸¥ F3.9 ÃÊÁ¡ ºñÀ²À» ´Þ¼ºÇÒ ¼ö ÀÖ½À´Ï´Ù, Àüü ÇÁ·¹ÀÓµµ Áö¿øµÇ¸ç, ÀÌ´Â ¸Å¿ì µå¹® À¯ÇüÀÇ ±¼Àý ¸Á¿ø°æ.
FRA400/5.6 Àº "astrograph°¡ È®Àå µÈ ±íÀº ÇÏ´Ã ¹°Ã¼¸¦ ĸóÇÏ´Â ¸¸Á· ÇÑ °üÃø °æÇèÀ» ÃæÁ·½ÃÄѾßÇÏ¸ç °£´ÜÇÑ ±¸¼º ¹× ´õ ³ªÀº ±¤ÇÐ ¼º´ÉÀ» Á¦°øÇϵµ·Ï ¼³°èµÇ¾ú½À´Ï´Ù. ±×°ÍÀº ÇöÀúÇÏ°Ô ´õ ³ªÀº »ç¿ëÀÚ °æÇèÀ» Á¦°øÇÒ °ÍÀÔ´Ï´Ù.
»ç¾ç:
Á¶¸®°³: 72mm
ÃÊÁ¡ °Å¸®: 400mm
ÃÊÁ¡ ºñÀ²: F5.6
°´°üÀûÀÎ À¯Çü: Quintuplet ÀÌÁß ED °ø±â °£°Ý APO
Àüü ±æÀÌ: 317mm
±×¹° ¹«°Ô: 2.56 Å°·Î±×·¥
Ç¥ÁØ ÆÐÅ°Áö ¹«°Ô: 2.88kg
ÈÄ¸é ¾î´ðÅÍ: M68 ¡¿ 1 ¼ö³ª»ç, 2 "¾î´ðÅÍ/1.25" ¾î´ðÅÍ
¾×¼¼¼¸®: ÇÑ ½ÖÀÇ Æ©ºê ¸µ, ÇÚµé, ´õºê Å×ÀÏ Ç÷¹ÀÌÆ®, M68-M48 ¿øÃßÇü ¾î´ðÅÍ, °Ë»ç ¸ñ·Ï, ¼³¸í¼
![](https://ae01.alicdn.com/kf/H9573cdf8b69c45f980529ef9ecc59810U.jpg)
![](https://ae01.alicdn.com/kf/Hba2549ec6a424f8d8b609e5b5528cb89v.jpg)
![](https://ae01.alicdn.com/kf/H33f4e9071ce249d28618de263f2a89155.jpg)
![](https://ae01.alicdn.com/kf/H6e844c0dbcf94a6985a2747b8239848b3.jpg)
![](https://ae01.alicdn.com/kf/H2bb9b0b723d043e8b7cf71e9607dc4d10.jpg)
![](https://ae01.alicdn.com/kf/H61840a4e545e435cb5c6d3383bbd8cc3F.jpg)
![](https://ae01.alicdn.com/kf/H2cbe59c76e874a968dc56f9a9fec8f93v.jpg)
![](https://ae01.alicdn.com/kf/H520c538a20fa4c89b6a013a77f3ca17dO.jpg)
![](https://ae01.alicdn.com/kf/H4417bf055a934963b4405de1092c24ff6.jpg)
![](https://ae01.alicdn.com/kf/H08519bb0343c406abb646e6d23c52df8k.jpg)
![](https://ae01.alicdn.com/kf/H5b885ca91573454f85c233e6d7544e9fI.jpg)
![](https://ae01.alicdn.com/kf/He72ed933e4bb48fc840cf0588a67057du.jpg)
![](https://ae01.alicdn.com/kf/H708e1f78bd184a139fe0433fcbb49db63.jpg)