Barlow: faahfaahinta Product

Barlow waa mid ka mid ah siyaada ugu caansan on gacmaha cirbixiyeyaasha, labada xirfadeed iyo hiwaayadda. Waxaa muhiim ah in gudbikaraa this dhaqdhaqaaqa. qalab Tani waa mid fudud in qaab gashto concave (negative), taas oo si weyn u kordhiyaa weyneeyey ku ool ah oo xoqad ah. element waxaa la Been abuurtay in xisaab qarnigii XIX Peter Barlow. Sidaa awgeed magaca qalab this.

codsiyada soo saarka

Sababtoo ah halka ay miday, Barlow gashto waa arrin si weyn u isticmaala cirbixiyeyaasha shahaadooyinka kala duwan. Iyada oo qalab this aad qaadi karaan kororka ugu badan ee suurtogalka ah ee shayga la arkay iyada oo xoqad ah. Tani waxay hanti muhiim ah. Tusaale ahaan, gashto Barlow 2x marka ay soo hordhigtay inta u dhaxaysa eyepiece reer xoqad iyo gashto, siinta weyneeyey a 100x caadiga ah waxay kordhisaa tirada in 200x. Laakiinse kordhinta sidii waxtar leh ay ku xiran tahay xasilooni iyo Hawada shuruudaha, isticmaalka sheegay in wax soo saarka mar walba ma aha run. Tusaale ahaan, haddii at weyneeyey ah airflows 100x isku dari kara image, gashto Barlow ah, laban laabmay heerka dhaw in 200x, kaliya xaaladda ka sii darayaan. Kuwa ugu waxtar badan yahay isticmaalka qalab this isku dhafan oo xoqad gaaban diirada. Device Barlow gashto siin doonaa wax ku-oolnimada badan ay sabab u tahay xaqiiqada ah in telescopes sheegay ayaa dabacsanaan ku koobnayn, tan iyo markii ay waxaa loo isticmaalaa in caadiga ah eyepieces gaaban diirada. Barlow sidoo kale waa qalab lagama maarmaan u ah qabsaday meerayaasha ku saabsan filimka ama camera digital.
Waxay bixisaa fursad ay ku "jiid" faahfaahinta yar, ama Mozilla in on image ah. Sababtoo ah ee dhumucda yar ee galaas on gashto tayada Jidka iftiimi doonaa natiijo u dhiganta badan qiyaas ah iyada oo loo marayo eyepiece si photodetector ah.

sharafta

Faa'iidada ugu weyn ee qalabka waa in u kordhiyaa qadarka weyneeyey heli karo. Tusaale ahaan, haddii ay jiraan cirbixiyeyaasha eyepieces waa 10 mm, 18 mm, 26 mm, iyadoo ay wada joogaan Barlow 2x sida ay u fidiya u siin instrumentny qalabka 5 mm, 9 mm iyo 13 mm. Waa dhaqaale kiiskan. In si kale loo dhigo, gashto Barlow a bedeli karaa saddex of eyepiece ah.

kala duwanaanta

The lenses ugu badan Barlow labo jeer ahaa (2x). Si kastaba ha ahaatee, kordhinta multiplier ka xogta soo saaray in waxyaabaha taariikhda waa mid aad u kala duwan. 3x Barlow gashto waa wax caadi ah, iyo 4x, iyo 5x, iyo sidoo kale laga heli karaa 1.5x iyo 2.5x. Waxaa jira lagu daydo oo la weyneeyey variable 2 ilaa 3. Adkayn isticmaalka muraayada kuwaas oo ka saarida ma ku filan sare kartaan oo diiradda xoqad ah.

Golaha

In doorashada ee ka gashto Barlow lagama maarmaan ah in xoqad la heli karo, fiiro gaar ah in la bixiyo, in dhexroorka of darafta dhulka. ay size waxaa laga yaabaa in 0,965, 1.25 ama 2 inches. Waa isku mid in dhexroorka of focuser iyo dhulka ku eyepieces. Si aad u hesho weyneeyey laba-laab ah oo isticmaalaya Barlow 2, waxaa lagama maarmaan ah si aad u sameysato muraayad u dhexeeya dadab iyo eyepiece ah. Waxyaabahani runtii of tayo sare leh waa in lagu iftiimiyo oo ay wacan tahay in la multi-oo israac raacsan.